91Ó°ÊÓ

Use the properties of real to answer each question

If $mn=m$, what is the value of $n$?

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

$\left|3w+2\right|≤5$

Evaluate each expression if$w=6,x=0.4,y=\frac{1}{2},$ and$z=-3$

39.$w+12÷z$

Solve the equation and check the solution.

$4|3x+4|=4x+8$

Name the property illustrate by each statement.

If $14=\frac{x}{2}+11$, then $\frac{x}{2}+11=14$.

PART-TIME JOB

David earns $\backslash (5.60$ an hour working at Box Office Videos. Each week, $25\%$ of his total pay is deducted for taxes. If David wants his take-home pay to be at least $\backslash )105$ a week, solve the inequality $5.6x-0.25\left(5.6x\right)â‰\yen 105$ to determine how many hours he must work.

Solve each equation. Check your solution

$-12\left|9x+1\right|=144$

Find the value of each expression.

$\left[{\left(\mathbf{3}\mathbf{+}\mathbf{6}\right)}^{\mathbf{2}}\mathbf{÷}\mathbf{3}\right]\mathbf{×}\mathbf{4}$

4. Evaluate $a^3+b\left(9-c\right)$ if $a=-2,b=\frac{1}{3},$ and $c=-12$

Find the value of each expression

4.$8\left(3+6\right)$