91Ó°ÊÓ

8. Name the property illustrated by $bc+\left(-bc\right)=0$

Solve each inequality. Graph the solution set on a number line.

$y-3>1ory+2<1$

Name the property illustrate by each statement.

$\left(3x+2\right)-5=\left(3x+2\right)-5$

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

8. $2w+19<5$

Name the property illustrated by each equation.

$\left(a+4\right)+2=a+\left(4+2\right)$

Choose the term from the list above that best matches with each example.

$\mathbf{2}\mathbf{p}\mathbf{+}\left(\mathbf{4}\mathbf{+}\mathbf{9}\mathbf{r}\right)\mathbf{=}\left(\mathbf{2}\mathbf{p}\mathbf{+}\mathbf{4}\right)\mathbf{+}\mathbf{9}\mathbf{r}$

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 $\mathbf{d}\mathbf{=}\mathbf{-}\mathbf{6}$.

8. $\frac{\mathbf{a}}{{\mathbf{b}}^{\mathbf{2}}}\mathbf{+}\mathbf{c}$

The ratio of girls to boys in a class is 5 to 4. If there are total of 27 students in the class, state how many are girls.

A. 15 B. 12

C. 9 D. 5

Simplify each expression.

$4\left(2a+5b\right)-3\left(4b-a\right)$

Evaluate each expression if $a=-5,b=0.25,c=\frac{1}{2},$ and$d=4$.

80. $a+2b-c$