91影视

Solve$5x-3y=9$for$y$.

Solve each equation. Check your solution.

$8y=48$

State whether each percent of change is a percent of increase or a percent of decrease. Then find the percent of change. Round to the nearest whole percent.

original: 21 hours

new: 40 hours

Solve each proportion. If necessary, round to nearest hundredth.

$\frac{w}{2}=\frac{4.5}{6.8}$

Solve each equation. Check your solution.

$18+z=40$

Evaluate each expression if $a=鈭�2,b=鈭�3,c=2$, $x=2.1,y=3$, and $z=鈭�4.2$.

$鈭�4\left|c鈭�3\right|+2\left|z鈭�a\right|$

Solve each equation. Check your solution.

$6\left(3a+1\right)鈭�30=3\left(2a鈭�4\right)$

Translate the following sentence into an equation:

鈥淭hree times b less than 100 is equal to the product of 6 and b鈥�.

Solve each equation. Then graph the solution set.

$\left|n鈭�3\right|=5$

Solve each proportion. If necessary, round to nearest hundredth.

$\frac{1}{0.19}=\frac{12}{n}$