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Home > CCA > Chapter 1 > Lesson 1.1.2 > Problem 1-20


Evaluate the expressions below for the given values.


  • Substitute for the value given, and then simplify by using the Order of Operations.


  1. for

    Use the same method as part (a).

  1. for

    Substitute the given value for , and simplify for the denominator before dividing.

  1. for and

    Use the same method as part (c). Remember to substitute the correct values for and !