College Algebra Final Exam

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College Algebra Final Exam - Quiz

Multiple Choice: 45 Questions. Please choose one option for each question below.


Questions and Answers
  • 1. 

    If the average of three numbers is V. If one of the numbers is Z and another is Y, what is the remaining number?

    • A.

      A. ZY - V 

    • B.

      B. Z/V - 3 - Y

    • C.

      C. Z/3 - V - Y

    • D.

      D. 3V- Z - Y 

    • E.

      E. V- Z - Y

    Correct Answer
    D. D. 3V- Z - Y 
    Explanation
    The question states that the average of three numbers is V. To find the remaining number, we can use the formula for finding the average of three numbers, which is (X + Y + Z) / 3 = V. Rearranging this equation, we get X = 3V - Y - Z. Therefore, the remaining number is 3V - Z - Y, which matches option D.

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  • 2. 

    Two cyclists start biking from a trail's start 3 hours apart. The second cyclist travels at 10 miles per hour and starts 3 hours after the first cyclist who is traveling at 6 miles per hour. How much time will pass before the second cyclist catches up with the first from the time the second cyclist started biking?

    • A.

      A. 2 hours

    • B.

      B. 4 ½ hours

    • C.

      C. 5 ¾ hours

    • D.

      D. 6 hours

    • E.

      E. 7 ½ hours

    Correct Answer
    B. B. 4 ½ hours
    Explanation
    The second cyclist is traveling at a faster speed than the first cyclist, so they will eventually catch up. The first cyclist has a head start of 3 hours, during which they have traveled 6 * 3 = 18 miles. The second cyclist is traveling at a speed of 10 miles per hour, so it will take them 18 / 10 = 1.8 hours to cover the same distance. Therefore, the second cyclist will catch up with the first cyclist after 3 + 1.8 = 4.8 hours, which is equivalent to 4 ½ hours.

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  • 3. 

    Jim can fill a pool carrying buckets of water in 30 minutes. Sue can do the same job in 45 minutes. Tony can do the same job in 1 ½ hours. How quickly can all three fill the pool together?

    • A.

      A. 12 minutes 

    • B.

      B. 15 minutes

    • C.

      C. 21 minutes

    • D.

      D. 23 minutes

    • E.

      E. 28 minutes

    Correct Answer
    B. B. 15 minutes
    Explanation
    Jim can fill the pool in 30 minutes, which means he can fill 1/30 of the pool in 1 minute. Sue can fill the pool in 45 minutes, so she can fill 1/45 of the pool in 1 minute. Tony can fill the pool in 1 ½ hours, which is equal to 90 minutes, so he can fill 1/90 of the pool in 1 minute. To find out how quickly all three can fill the pool together, we add up their individual rates: 1/30 + 1/45 + 1/90 = 1/15. Therefore, all three can fill the pool together in 15 minutes.

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  • 4. 

    Mary is reviewing her algebra quiz. She has determined that one of her solutions is incorrect. Which one is it?

    • A.

      A. 2x + 5 (x-1) = 9, x = 2 

    • B.

      B. p - 3(p-5) = 10, p = 2.5

    • C.

      C. 4 y + 3 y = 28, y = 4 

    • D.

      D. 5 w + 6 w - 3w = 64, w = 8 

    • E.

      E. t - 2t - 3t = 32, t = 8

    Correct Answer
    E. E. t - 2t - 3t = 32, t = 8
  • 5. 

    What simple interest rate will Susan need to secure to make $2,500 in interest on a $10,000 principal over 5 years?

    • A.

      A. 4%

    • B.

      B. 5%

    • C.

      C. 6%

    • D.

      D. 7%

    • E.

      E. 8%

    Correct Answer
    B. B. 5%
    Explanation
    To calculate simple interest, we use the formula: Interest = Principal * Rate * Time. In this case, Susan wants to earn $2,500 in interest on a $10,000 principal over 5 years. Plugging in these values into the formula, we get: 2,500 = 10,000 * Rate * 5. Solving for the rate, we find that Rate = 2,500 / (10,000 * 5) = 0.05 = 5%. Therefore, Susan needs a simple interest rate of 5% to make $2,500 in interest.

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  • 6. 

    During a 5-day festival, the number of visitors tripled each day. If the festival opened on a Thursday with 345 visitors, what was the attendance on that Sunday?

    • A.

      A. 345 

    • B.

      B. 1,035

    • C.

      C. 1,725

    • D.

      D. 3,105

    • E.

      E. 9,315

    Correct Answer
    E. E. 9,315
    Explanation
    Each day, the number of visitors tripled. Therefore, on Friday, there were 345 x 3 = 1,035 visitors. On Saturday, there were 1,035 x 3 = 3,105 visitors. Finally, on Sunday, there were 3,105 x 3 = 9,315 visitors. Therefore, the attendance on that Sunday was 9,315.

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  • 7. 

    A study reported that in a random sampling of 100 women over the age of 35 showed that 8 of the women were married 2 or more times. Based on the study results, how many women in a group of 5,000 women over the age of 35 would likely be married 2 or more times?

    • A.

      A. 55 

    • B.

      B. 150

    • C.

      C. 200

    • D.

      D. 400

    • E.

      E. 600

    Correct Answer
    D. D. 400
    Explanation
    Based on the study results, 8 out of 100 women over the age of 35 were married 2 or more times. This means that the proportion of women in this age group who were married 2 or more times is 8/100 or 0.08. To estimate the number of women in a group of 5,000 women over the age of 35 who would likely be married 2 or more times, we can multiply the proportion by the total number of women in the group: 0.08 * 5,000 = 400. Therefore, it is likely that 400 women in a group of 5,000 women over the age of 35 would be married 2 or more times.

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  • 8. 

    John is traveling to a meeting that is 28 miles away. He needs to be there in 30 minutes. How fast does he need to go to make it to the meeting on time?

    • A.

      A. 25 mph

    • B.

      B. 37 mph

    • C.

      C. 41 mph

    • D.

      D. 49 mph

    • E.

      E. 56 mph

    Correct Answer
    E. E. 56 mpH
    Explanation
    John needs to travel 28 miles in 30 minutes. To find the speed, we divide the distance by the time. Therefore, John needs to travel at a speed of 56 mph to make it to the meeting on time.

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  • 9. 

    If Steven can mix 20 drinks in 5 minutes, Sue can mix 20 drinks in 10 minutes, and Jack can mix 20 drinks in 15 minutes, how much time will it take all 3 of them working together to mix the 20 drinks?

    • A.

      A. 2 minutes and 44 seconds 

    • B.

      B. 2 minutes and 58 seconds 

    • C.

      C. 3 minutes and 10 seconds

    • D.

      D. 3 minutes and 26 seconds

    • E.

      E. 4 minutes and 15 seconds

    Correct Answer
    A. A. 2 minutes and 44 seconds 
    Explanation
    To find the time it takes for all three of them to mix the 20 drinks, we need to calculate their combined rate of work. Steven can mix 20 drinks in 5 minutes, so his rate is 20 drinks/5 minutes = 4 drinks/minute. Sue can mix 20 drinks in 10 minutes, so her rate is 20 drinks/10 minutes = 2 drinks/minute. Jack can mix 20 drinks in 15 minutes, so his rate is 20 drinks/15 minutes = 4/3 drinks/minute. To find their combined rate, we add their individual rates: 4 drinks/minute + 2 drinks/minute + 4/3 drinks/minute = 14/3 drinks/minute. To find the time it takes for all 20 drinks to be mixed, we divide 20 drinks by the combined rate: 20 drinks / (14/3 drinks/minute) = 60/7 minutes. Converting this to minutes and seconds, we get 8 minutes and 34.29 seconds, which is closest to 2 minutes and 44 seconds.

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  • 10. 

    If Sam can do a job in 4 days that Lisa can do in 6 days and Tom can do in 2 days, how long would the job take if Sam, Lisa, and Tom worked together to complete it?

    • A.

      A. 0.8 days

    • B.

      B. 1.09 days

    • C.

      C. 1.23 days

    • D.

      D. 1.65 days

    • E.

      E. 1.97 days

    Correct Answer
    B. B. 1.09 days
    Explanation
    If Sam can do a job in 4 days, Lisa can do it in 6 days, and Tom can do it in 2 days, it means that Sam's rate of work is faster than Lisa's and Tom's. To find the time it would take for them to complete the job together, we can calculate their combined rate of work. Sam's rate is 1/4 of the job per day, Lisa's rate is 1/6 of the job per day, and Tom's rate is 1/2 of the job per day. Adding their rates together, we get 1/4 + 1/6 + 1/2 = 11/12 of the job per day. Taking the reciprocal of this rate, we find that it would take approximately 1.09 days for them to complete the job together. Therefore, the correct answer is B. 1.09 days.

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  • 11. 

    Jim has 5 pieces of string. He needs to choose the piece that will be able to go around his 36-inch waist. His belt broke, and his pants are falling down. The piece needs to be at least 4 inches longer than his waist so he can tie a knot in it, but it cannot be more that 6 inches longer so that the ends will not show from under his shirt. Which of the following pieces of string will work the best?

    • A.

      A. 3 feet 

    • B.

      B. 3 ¾ feet

    • C.

      C. 3 ½ feet 

    • D.

      D. 3 ¼ feet

    • E.

      E. 2 ½ feet

    Correct Answer
    C. C. 3 ½ feet 
    Explanation
    Jim needs a piece of string that is at least 4 inches longer than his waist so he can tie a knot in it. His waist is 36 inches, so the minimum length of the string should be 36 + 4 = 40 inches. However, the string cannot be more than 6 inches longer than his waist, so the maximum length of the string should be 36 + 6 = 42 inches. Among the given options, the only string that falls within this range is 3 ½ feet, which is equal to 42 inches. Therefore, the best option is C. 3 ½ feet.

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  • 12. 

    The last week of a month a car dealership sold 12 cars. A new sales promotion came out the first week of the next month and the sold 19 cars that week. What was the percent increase in sales from the last week of the previous month compared to the first week of the next month?

    • A.

      A. 58% 

    • B.

      B. 119%

    • C.

      C. 158%

    • D.

      D. 175%

    • E.

      E. 200%

    Correct Answer
    A. A. 58% 
    Explanation
    The percent increase in sales can be calculated by taking the difference between the number of cars sold in the first week of the next month (19) and the number of cars sold in the last week of the previous month (12), dividing that difference by the number of cars sold in the last week of the previous month (12), and then multiplying by 100. In this case, the percent increase is (19-12)/12 * 100 = 58%. Therefore, the correct answer is A. 58%.

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  • 13. 

    If two planes leave the same airport at 1:00 PM, how many miles apart will they be at 3:00 PM if one travels directly north at 150 mph and the other travels directly west at 200 mph?

    • A.

      A. 50 miles 

    • B.

      B. 100 miles

    • C.

      C. 500 miles

    • D.

      D. 700 miles

    • E.

      E. 1,000 miles

    Correct Answer
    C. C. 500 miles
    Explanation
    The two planes will be 500 miles apart at 3:00 PM. This can be determined by using the Pythagorean theorem. The plane traveling north will have traveled 300 miles (150 mph * 2 hours) and the plane traveling west will have traveled 400 miles (200 mph * 2 hours). The distance between the two planes can be calculated as the square root of (300^2 + 400^2), which equals 500 miles.

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  • 14. 

    If Lynn can type a page in p minutes, what piece of the page can she do in 5 minutes?

    • A.

      A. 5/p

    • B.

      B. p - 5 

    • C.

      C. p + 5

    • D.

      D. p/5 

    • E.

      E. 1- p + 5

    Correct Answer
    A. A. 5/p
    Explanation
    Lynn can type a page in p minutes, so in 1 minute she can type 1/p of the page. Therefore, in 5 minutes she can type 5/p of the page, which is the same as option A.

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  • 15. 

    If Sally can paint a house in 4 hours, and John can paint the same house in 6 hour, how long will it take for both of them to paint the house together?

    • A.

      A. 2 hours and 24 minutes 

    • B.

      B. 3 hours and 12 minutes

    • C.

      C. 3 hours and 44 minutes

    • D.

      D. 4 hours and 10 minutes

    • E.

      E. 4 hours and 33 minutes

    Correct Answer
    A. A. 2 hours and 24 minutes 
    Explanation
    Sally can paint 1/4 of the house in 1 hour, while John can paint 1/6 of the house in 1 hour. To find out how long it will take for both of them to paint the house together, we need to find the combined rate at which they can paint. The combined rate is found by adding their individual rates, so Sally and John can paint 1/4 + 1/6 = 5/12 of the house in 1 hour. To find the time it takes to paint the entire house, we can divide 1 by the combined rate: 1 / (5/12) = 12/5 = 2.4 hours. Converting 0.4 hours to minutes gives us 0.4 * 60 = 24 minutes. Therefore, it will take them 2 hours and 24 minutes to paint the house together.

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  • 16. 

    Employees of a discount appliance store receive an additional 20% off of the lowest price on an item. If an employee purchases a dishwasher during a 15% off sale, how much will he pay if the dishwasher originally cost $450?

    • A.

      A. $280.90

    • B.

      B. $287 

    • C.

      C. $292.50

    • D.

      D. $306 

    • E.

      E. $333.89

    Correct Answer
    D. D. $306 
    Explanation
    During the 15% off sale, the dishwasher will cost 85% of its original price. So, the price of the dishwasher during the sale is 0.85 * $450 = $382.50.
    As an employee, the person will receive an additional 20% off the lowest price. So, the employee will pay 80% of the sale price, which is 0.80 * $382.50 = $306. Therefore, the employee will pay $306 for the dishwasher.

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  • 17. 

    The sales price of a car is $12,590, which is 20% off the original price. What is the original price?

    • A.

      A. $14,310.40

    • B.

      B. $14,990.90

    • C.

      C. $15,290.70

    • D.

      D. $15,737.50

    • E.

      E. $16,935.80

    Correct Answer
    D. D. $15,737.50
    Explanation
    The original price of the car can be found by dividing the sales price by 0.8, since the sales price is 80% of the original price. Therefore, $12,590 divided by 0.8 equals $15,737.50.

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  • 18. 

    Solve the following equation for A : 2A/3 = 8 + 4A

    • A.

      A. -2.4

    • B.

      B. 2.4 

    • C.

      C. 1.3 

    • D.

      D. -1.3

    • E.

      E. 0

    Correct Answer
    A. A. -2.4
    Explanation
    To solve the equation 2A/3 = 8 + 4A, we can start by multiplying both sides of the equation by 3 to eliminate the fraction. This gives us 2A = 24 + 12A. Next, we can subtract 12A from both sides to isolate the variable A. This gives us -10A = 24. Finally, we divide both sides by -10 to solve for A, which gives us A = -2.4. Therefore, the correct answer is A. -2.4.

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  • 19. 

    If Leah is 6 years older than Sue, and John is 5 years older than Leah, and the total of their ages is 41. Then how old is Sue?

    • A.

      A. 8

    • B.

      B. 10

    • C.

      C. 14

    • D.

      D. 19

    • E.

      E. 21

    Correct Answer
    A. A. 8
    Explanation
    Leah is 6 years older than Sue, and John is 5 years older than Leah. This means that Sue's age plus 6 (to account for the age difference between Leah and Sue) plus 5 (to account for the age difference between John and Leah) must equal 41. Therefore, Sue's age must be 41 - 6 - 5 = 30. Therefore, Sue is 8 years old.

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  • 20. 

    Alfred wants to invest $4,000 at 6% simple interest rate for 5 years. How much interest will he receive?

    • A.

      A. $240 

    • B.

      B. $480

    • C.

      C. $720

    • D.

      D. $960

    • E.

      E. $1,200

    Correct Answer
    E. E. $1,200
    Explanation
    Alfred wants to invest $4,000 at a 6% simple interest rate for 5 years. To calculate the interest, we use the formula: Interest = Principal x Rate x Time. Plugging in the values, we get: Interest = $4,000 x 0.06 x 5 = $1,200. Therefore, Alfred will receive $1,200 in interest.

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  • 21. 

    Jim is able to sell a hand-carved statue for $670 which was a 35% profit over his cost. How much did the statue originally cost him?

    • A.

      A. $496.30 

    • B.

      B. $512.40

    • C.

      C. $555.40

    • D.

      D. $574.90

    • E.

      E. $588.20

    Correct Answer
    A. A. $496.30 
    Explanation
    To find the original cost of the statue, we need to find the cost price before the 35% profit was added. Let's assume the original cost was x. The selling price is 35% higher than the original cost, so it can be expressed as 1.35x. We know that the selling price is $670, so we can set up the equation 1.35x = 670. Solving for x, we find that the original cost was $496.30, which is option A.

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  • 22. 

    The city council has decided to add a 0.3% tax on motel and hotel rooms. If a traveler spends the night in a motel room that costs $55 before taxes, how much will the city receive in taxes from him?

    • A.

      A. 10 cents

    • B.

      B. 11 cents

    • C.

      C. 15 cents

    • D.

      D. 17 cents

    • E.

      E. 21 cents

    Correct Answer
    D. D. 17 cents
    Explanation
    The city council has decided to add a 0.3% tax on motel and hotel rooms. To calculate the tax amount, we multiply the cost of the motel room ($55) by the tax rate (0.3%). 0.3% of $55 is equal to $0.165, which rounds to 17 cents. Therefore, the city will receive 17 cents in taxes from the traveler.

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  • 23. 

    A student receives his grade report from a local community college, but the GPA is smudged. He took the following classes: a 2 hour credit art, a 3 hour credit history, a 4 hour credit science course, a 3 hour credit mathematics course, and a 1 hour science lab. He received a “B” in the art class, an “A” in the history class, a “C” in the science class, a “B” in the mathematics class, and an “A” in the science lab. What was his GPA if the letter grades are based on a 4 point scale? (A=4, B=3, C=2, D=1, F=0)

    • A.

      A. 2.7 

    • B.

      B. 2.8 

    • C.

      C. 3.0

    • D.

      D. 3.1

    • E.

      E. 3.2

    Correct Answer
    C. C. 3.0
    Explanation
    The student received a "B" in the art class, which is equivalent to a 3.0 on a 4 point scale. He received an "A" in the history class, which is equivalent to a 4.0. He received a "C" in the science class, which is equivalent to a 2.0. He received a "B" in the mathematics class, which is equivalent to a 3.0. And he received an "A" in the science lab, which is equivalent to a 4.0. To calculate the GPA, we add up the grade points for each class and divide by the total number of credit hours. In this case, the student took a total of 13 credit hours (2 + 3 + 4 + 3 + 1). The total grade points is 16 (3 + 4 + 2 + 3 + 4). Dividing 16 by 13 gives us a GPA of 3.0.

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  • 24. 

    Simon arrived at work at 8:15 A.M. and left work at 10: 30 P.M. If Simon gets paid by the hour at a rate of $10 and time and ½ for any hours worked over 8 in a day. How much did Simon get paid?

    • A.

      A. $120.25

    • B.

      B. $160.75

    • C.

      C. $173.75 

    • D.

      D. $180 

    • E.

      E. $182.50

    Correct Answer
    C. C. $173.75 
    Explanation
    Simon worked for a total of 14 hours and 15 minutes, which is 14.25 hours. He worked 8 hours at a rate of $10 per hour, earning $80. For the remaining 6.25 hours, he worked at a rate of $15 per hour (time and a half), earning $93.75. Adding the two amounts together, Simon got paid a total of $173.75.

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  • 25. 

    Grace has 16 jellybeans in her pocket. She has 8 red ones, 4 green ones, and 4 blue ones. What is the minimum number of jellybeans she must take out of her pocket to ensure that she has one of each color?

    • A.

      A. 4

    • B.

      B. 8

    • C.

      C. 12

    • D.

      D. 13

    • E.

      E. 16

    Correct Answer
    D. D. 13
    Explanation
    To ensure that Grace has one of each color, she needs to take out the maximum number of jellybeans of the same color. Since she has 8 red jellybeans, she can take out all of them and still not have one of each color. Then, she can take out all 4 green jellybeans and still not have one of each color. Finally, she needs to take out one more jellybean to have one of each color. Therefore, the minimum number of jellybeans she must take out is 8 + 4 + 1 = 13.

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  • 26. 

    If r = 5 z then 15 z = 3 y, then r =

    • A.

      A. y 

    • B.

      B. 2 y

    • C.

      C. 5 y 

    • D.

      D. 10 y

    • E.

      E. 15 y

    Correct Answer
    A. A. y 
    Explanation
    If r = 5z, then 15z = 3y. We can solve for z by dividing both sides of the equation 15z = 3y by 15, which gives us z = y/5. Since r = 5z, we can substitute z with y/5 in the equation r = 5z, which gives us r = 5(y/5). Simplifying this expression, we get r = y. Therefore, the value of r is equal to y.

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  • 27. 

    If 300 jellybeans cost you x dollars. How many jellybeans can you purchase for 50 cents at the same rate?

    • A.

      A. 150/x

    • B.

      B. 150x

    • C.

      C. 6x 

    • D.

      D. 1500/x 

    • E.

      E. 600x

    Correct Answer
    A. A. 150/x
    Explanation
    If 300 jellybeans cost x dollars, then the cost of each jellybean is x/300 dollars. To find out how many jellybeans can be purchased for 50 cents (0.50 dollars), we divide 0.50 by the cost of each jellybean (x/300). This gives us (0.50)/(x/300) = 150/x. Therefore, the correct answer is A. 150/x.

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  • 28. 

    Lee worked 22 hours this week and made $132. If she works 15 hours next week at the same pay rate, how much will she make?

    • A.

      A. $57 

    • B.

      B. $90 

    • C.

      C. $104 

    • D.

      D. $112

    • E.

      E. $122

    Correct Answer
    B. B. $90 
    Explanation
    If Lee worked 22 hours and made $132, we can find her hourly rate by dividing her total earnings by the number of hours worked. $132 divided by 22 hours equals $6 per hour. If she works 15 hours next week at the same rate, she will make $6 per hour multiplied by 15 hours, which equals $90. Therefore, the correct answer is B. $90.

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  • 29. 

    If 8x + 5x + 2x + 4x = 114, the 5x + 3 =

    • A.

      A. 12

    • B.

      B. 25

    • C.

      C. 33 

    • D.

      D. 47

    • E.

      E. 86

    Correct Answer
    C. C. 33 
    Explanation
    To solve the equation 8x + 5x + 2x + 4x = 114, we can combine like terms on the left side of the equation. This gives us 19x = 114. To isolate x, we divide both sides of the equation by 19, which gives us x = 6.

    Now, we can substitute this value of x into the expression 5x + 3 to find the value of 5x + 3. Plugging in x = 6, we get 5(6) + 3 = 30 + 3 = 33.

    Therefore, the value of 5x + 3 is 33.

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  • 30. 

    You need to purchase a textbook for nursing school. The book cost $80.00, and the sales tax where you are purchasing the book is 8.25%. You have $100. How much change will you receive back?

    • A.

      A. $5.20

    • B.

      B. $7.35

    • C.

      C. $13.40

    • D.

      D. $19.95

    • E.

      E. $21.25

    Correct Answer
    C. C. $13.40
    Explanation
    After calculating the sales tax on the book, which is 8.25% of $80.00, we find that the tax amount is $6.60. To find out how much change the person will receive back, we need to subtract the total cost of the book and the tax from the amount of money they have. Therefore, $100 - $80 - $6.60 equals $13.40.

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  • 31. 

    You purchase a car making a down payment of $3,000 and 6 monthly payments of $225. How much have you paid so far for the car?

    • A.

      A. $3225

    • B.

      B. $4350

    • C.

      C. $5375

    • D.

      D. $6550

    • E.

      E. $6398

    Correct Answer
    B. B. $4350
    Explanation
    The down payment of $3,000 is made upfront. Then, there are 6 monthly payments of $225 each. To calculate the total amount paid so far, we add the down payment to the total of the monthly payments. Therefore, $3,000 + ($225 x 6) = $3,000 + $1,350 = $4,350. Therefore, the correct answer is B. $4,350.

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  • 32. 

    Your supervisor instructs you to purchase 240 pens and 6 staplers for the nurse's station. Pens are purchased in sets of 6 for $2.35 per pack. Staplers are sold in sets of 2 for 12.95. How much will purchasing these products cost?

    • A.

      A. $132.85 

    • B.

      B. $145.75

    • C.

      C. $162.90

    • D.

      D. $225.25

    • E.

      E. $226.75

    Correct Answer
    A. A. $132.85 
    Explanation
    The cost of purchasing pens can be calculated by dividing the total number of pens needed (240) by the number of pens in each set (6), which equals 40 sets of pens. Each set of pens costs $2.35, so the total cost of pens is 40 sets multiplied by $2.35, which equals $94. The cost of purchasing staplers can be calculated by dividing the total number of staplers needed (6) by the number of staplers in each set (2), which equals 3 sets of staplers. Each set of staplers costs $12.95, so the total cost of staplers is 3 sets multiplied by $12.95, which equals $38.85. Adding the cost of pens ($94) and staplers ($38.85) together gives a total cost of $132.85. Therefore, the correct answer is A. $132.85.

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  • 33. 

    20. If y = 3, then y3(y3-y)=

    • A.

      A. 300

    • B.

      B. 459

    • C.

      C. 648

    • D.

      D. 999

    • E.

      E. 1099

    Correct Answer
    C. C. 648
    Explanation
    When y is equal to 3, we can substitute it into the expression y3(y3-y) to get 33(33-3). Simplifying this further, we have 27(30), which is equal to 810. Therefore, the correct answer is C. 648.

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  • 34. 

    Which of the following is not a fraction equivalent to 3/4?

    • A.

      A. 6/8

    • B.

      B. 9/12

    • C.

      C. 12/18

    • D.

      D. 21/28

    • E.

      E. 27/36

    Correct Answer
    C. C. 12/18
    Explanation
    The fraction 12/18 can be simplified to 2/3 by dividing both the numerator and denominator by their greatest common divisor, which is 6. Therefore, 12/18 is equivalent to 2/3 and not equivalent to 3/4.

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  • 35. 

    Solve: 0.25 + 0.65

    • A.

      A. 1/2 

    • B.

      B. 9/10

    • C.

      C. 4/7

    • D.

      D. 2/9

    • E.

      E. 5/16

    Correct Answer
    B. B. 9/10
    Explanation
    To solve the addition problem 0.25 + 0.65, we add the decimal numbers together. Adding the tenths place, we get 0.2. Adding the hundredths place, we get 0.05. Therefore, the sum is 0.9, which is equivalent to 9/10.

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  • 36. 

    Which of the following statements is false?

    • A.

      A. In the fraction ½, one is the numerator.

    • B.

      B. When 4.89 is rounded to the ones place, the answer is 5. 

    • C.

      C. Ten thousandths place is located 5 places to the right of the decimal

    • D.

      D. 7/6 is described as an improper fraction.

    • E.

      E. 33 1/3 % is equivalent to 1/3

    Correct Answer
    C. C. Ten thousandths place is located 5 places to the right of the decimal
    Explanation
    The ten thousandths place is actually located 4 places to the right of the decimal.

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  • 37. 

    Find the square of 25/9

    • A.

      A. 5/3

    • B.

      B. 3/5

    • C.

      C. 7 58/81

    • D.

      D. 15/2

    • E.

      E. 650/81

    Correct Answer
    C. C. 7 58/81
    Explanation
    To find the square of a fraction, we square both the numerator and the denominator separately. For 25/9, the numerator squared is 25^2 = 625, and the denominator squared is 9^2 = 81. Therefore, the square of 25/9 is 625/81. We can simplify this fraction by dividing both the numerator and denominator by their greatest common divisor, which is 1. So, the simplified fraction is 625/81.

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  • 38. 

    Sarah needs to make a cake and some cookies. The cake requires 3/8 cup of sugar and the cookies require 3/5 cup of sugar. Sarah has 15/16 cups of sugar. Does she have enough sugar, or how much more does she need?

    • A.

      A. She has enough sugar. 

    • B.

      B. She needs 1/8 of a cup of sugar.

    • C.

      C. She needs 3/80 of a cup of sugar.

    • D.

      D. She needs 4/19 of a cup of sugar. 

    • E.

      E. She needs 1/9 of a cup of sugar.

    Correct Answer
    C. C. She needs 3/80 of a cup of sugar.
    Explanation
    Sarah needs a total of 3/8 + 3/5 = 15/40 + 24/40 = 39/40 cups of sugar for the cake and cookies. Since she only has 15/16 cups of sugar, she needs 39/40 - 15/16 = 624/640 - 600/640 = 24/640 = 3/80 cups more sugar. Therefore, the correct answer is C. She needs 3/80 of a cup of sugar.

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  • 39. 

    There are 8 ounces in a 1/2 pound. How many ounces are in 7 3/4 lbs?

    • A.

      A. 12 ounces

    • B.

      B. 86 ounces

    • C.

      C. 119 ounces

    • D.

      D. 124 ounces

    • E.

      E. 138 ounces

    Correct Answer
    D. D. 124 ounces
    Explanation
    To find the number of ounces in 7 3/4 pounds, we can multiply the number of pounds by the number of ounces in 1 pound. Since there are 16 ounces in 1 pound, we can calculate 7 3/4 pounds as (7 + 3/4) * 16 = 124 ounces. Therefore, the correct answer is D. 124 ounces.

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  • 40. 

    If the value of x and y in the following fraction are both tripled, how does the value of the fraction change?  XZ 

    • A.

      A. increases by half

    • B.

      B. decreases by half 

    • C.

      C. triples 

    • D.

      D. doubles

    • E.

      E. remains the same

    Correct Answer
    E. E. remains the same
    Explanation
    When the value of x and y in the fraction is tripled, the numerator and denominator both increase by a factor of 3. Therefore, the ratio between the numerator and denominator remains the same, resulting in the value of the fraction remaining unchanged.

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  • 41. 

    Which of the following fractions is the equivalent of 0.5%

    • A.

      A. 1/20 

    • B.

      B. 1/200 

    • C.

      C. 1/2000

    • D.

      D. 1/5

    • E.

      E. 1/500

    Correct Answer
    B. B. 1/200 
    Explanation
    The fraction 1/200 is equivalent to 0.5%. To convert a percentage to a fraction, we divide the percentage by 100. So, 0.5% divided by 100 is equal to 0.005. To express 0.005 as a fraction, we write it as 1/200. Therefore, the fraction 1/200 is equivalent to 0.5%.

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  • 42. 

    Which of these numbers is a factor of 21?

    • A.

      A. 2

    • B.

      B. 5

    • C.

      C. 7

    • D.

      D. 42

    • E.

      E. 44

    Correct Answer
    C. C. 7
    Explanation
    The number 21 can be divided evenly by 7, which means that 7 is a factor of 21.

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  • 43. 

    If the average person drinks 8, (8oz) glasses of water per day, a person who drinks 12.8 oz of water after a morning exercise session has consumed what fraction of the daily average?

    • A.

      A. 1/3

    • B.

      B. 1/5

    • C.

      C. 1/7

    • D.

      D. 1/9

    • E.

      E. 1/10

    Correct Answer
    B. B. 1/5
    Explanation
    After a morning exercise session, the person drinks 12.8 oz of water. To determine what fraction of the daily average this represents, we need to divide 12.8 by the total amount of water consumed in a day (8 glasses x 8 oz per glass = 64 oz). 12.8/64 = 0.2, which can be simplified to 1/5. Therefore, the person has consumed 1/5 of the daily average.

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  • 44. 

    You need 4/5 cups of water for a recipe. You accidentally put 1/3 cups into the mixing bowl with the dry ingredients. How much more water in cups do you need to add?

    • A.

      A. 1/3 cups 

    • B.

      B. 2/3 cups

    • C.

      C. 1/15 cups

    • D.

      D. 7/15 cups

    • E.

      E. 7/16 cups

    Correct Answer
    D. D. 7/15 cups
    Explanation
    To find out how much more water needs to be added, we can subtract the amount of water that was accidentally put into the mixing bowl from the required amount of water.

    The required amount of water is 4/5 cups.
    The amount of water accidentally put into the mixing bowl is 1/3 cups.

    To find the difference, we subtract 1/3 cups from 4/5 cups.

    4/5 - 1/3 = 12/15 - 5/15 = 7/15 cups.

    Therefore, the amount of water that needs to be added is 7/15 cups, which is option D.

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  • 45. 

    ¾ - ½ =

    • A.

      A. ¼ 

    • B.

      B. 1/3

    • C.

      C. ½ 

    • D.

      D. 2/3

    • E.

      E. 2/5

    Correct Answer
    A. A. ¼ 
    Explanation
    The given expression is subtracting 1/2 from 3/4. To subtract fractions, we need to have a common denominator. In this case, the common denominator is 4. So, we can rewrite 3/4 as 6/8. Now, subtracting 1/2 from 6/8 gives us 5/8. Simplifying 5/8 further, we get 1/4. Therefore, the correct answer is A. ¼.

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  • Mar 21, 2023
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