### Home > INT1 > Chapter A > Lesson A.1.1 > Problem A-9

A-9.

The word “evaluate” has many different meanings. In math, when you are asked to evaluate an expression for a specified value of the variable(s), you are being asked to determine the value of the expression. You do this by replacing a variable with the given number and calculating the result.

Evaluate the expressions below for the given values.

Substitute

for .Simplify the terms and combine them.

Follow the steps in part (a).

Put everything you substituted inside parentheses so you do not lose your negative signs.

Follow the steps in part (a).

Follow the steps in part (a).