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Home > MC2 > Chapter 5 > Lesson 5.1.2 > Problem 5-22

5-22.

Translate each of these situations into a variable expression such as those found in a magic number chart.

  1. Think of a number and multiply it by seven.

    Use x to represent any number you think of.

    What would the expression look like if you multiplied your number by 7?

    7x

  2. Think of a number and divide it by eight.

    See (a).

  3. Think of a number and reduce it by ten.

    What happens to a number when you reduce it by 10?

    See (a).

  4. Think of a number, add two, then multiply by five.

    See (a).

    5 ( x + 2 )