Lesson 1 Variable Expressions

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| By Tcourtney
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Tcourtney
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Quizzes Created: 1 | Total Attempts: 144
Questions: 5 | Attempts: 144

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Lesson 1 Variable Expressions - Quiz


Variable Expressions
Language of math


Questions and Answers
  • 1. 

    Which one do you like?

    • A.

      4-x

    • B.

      X-4

    Correct Answer
    B. X-4
    Explanation
    The expression "four less than a number" implies that we are subtracting 4 from the number. Therefore, the correct expression would be x-4.

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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. 6x
    Explanation
    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.

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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 than
    Explanation
    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.

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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 x
    Explanation
    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.

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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. 33
    Explanation
    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.

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  • Current Version
  • May 03, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Jan 14, 2010
    Quiz Created by
    Tcourtney
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