91Ó°ÊÓ

PREREQUISITE SKILL

Evaluate each expression if $a=2,b=-\frac{3}{4},$and c=1.8.

86. $-9\left(a-6\right)$

Identify the additive inverse for each number or expression.

$2.5$

Identify the additive inverse for each number or expression.

$\frac{1}{4}$

Identify the additive inverse for each expression or expression.

$-3x$

Identify the additive inverse for each number or expression.

$5-6y$

Evaluate each expression if $\mathbf{a}\mathbf{=}\mathbf{-}\mathbf{9}\mathbf{,}\mathbf{b}\mathbf{=}\frac{\mathbf{2}}{\mathbf{3}}\mathbf{,}\mathbf{c}\mathbf{=}\mathbf{8}\mathbf{,}$ and $\mathbf{d}\mathbf{=}\mathbf{-}\mathbf{6}$.

9. $\mathbf{2}\mathbf{b}\left(\mathbf{4}\mathbf{a}\mathbf{+}{\mathbf{a}}^2\right)$$\mathbf{2}\mathbf{b}\left(\mathbf{4}\mathbf{a}\mathbf{+}{\mathbf{a}}^{\mathbf{2}}\right)$

Name the property illustrate by each statement.

If $4c=15$, then $4c+2=15+2$.

Find the value of each expression

$\frac{17\left(2+26\right)}{4}$

Solve each inequality. Describe the solution set using set-builder or interval notation. Then graph the solution set on number line.

$-0.6p<-9$

Name the property illustrated by each equation.

$4x+0=4x$