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

1-20.

Evaluate the expressions below for the given values.

for

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!