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

1-20.

Evaluate the expressions below for the given values. Homework Help ✎

Substitute

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

for Use the same method as part (a).

for Substitute the given value for

, and simplify for the denominator before dividing.

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

and!