Lesson 1 Variable Expressions
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Explore algebraic expressions in 'Lesson 1 Variable Expressions'. This quiz assesses understanding of variable expressions, their verbal descriptions, and evaluation. Key skills include translating phrases to expressions, simplifying expressions, and critical thinking in algebra.
- 1.
Which one do you like?
- A.
4-x
- B.
X-4
Correct Answer
B. X-4Explanation
The expression "four less than a number" implies that we are subtracting 4 from the number. Therefore, the correct expression would be x-4.Rate this question:
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- 2.
The expression "twice the product of 3 and x" is the same as which of the following?
- A.
2+(3x)
- B.
(2+3)x
- C.
6x
- D.
2(3+x)
Correct Answer
C. 6xExplanation
The expression "twice the product of 3 and x" means multiplying 3 and x together, and then multiplying the result by 2. This can be written as 2 * (3 * x), which simplifies to 6x.Rate this question:
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- 3.
Which of the following verbal expressions does NOT indicate multiplication
- A.
Product
- B.
Twice something
- C.
Times
- D.
More than
- E.
Of
Correct Answer
D. More thanExplanation
The phrase "more than" does not indicate multiplication. It implies a comparison or addition of quantities, rather than the multiplication of two or more numbers.Rate this question:
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- 4.
Which of the following is a verbal expression for 3x - 4.
- A.
4 less than the product of 3 and x
- B.
4 less than the quotient of 3 and x
- C.
The quotient of 3 and x decreased by 4
- D.
The product of 3 and x increased by 4
Correct Answer
A. 4 less than the product of 3 and xExplanation
The correct answer is "4 less than the product of 3 and x" because the expression 3x - 4 can be interpreted as taking the product of 3 and x and then subtracting 4 from it.Rate this question:
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- 5.
Evaluate 3x + 12 - 24/x when x is 8.
- A.
12
- B.
36
- C.
1.5
- D.
33
Correct Answer
D. 33Explanation
To evaluate the expression 3x + 12 - 24/x when x is 8, we substitute the value of x into the expression. Plugging in x = 8, we get 3(8) + 12 - 24/8. Simplifying further, we have 24 + 12 - 3, which equals 33. Therefore, the correct answer is 33.Rate this question:
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May 03, 2024Quiz Edited by
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Jan 14, 2010Quiz Created by
Tcourtney
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