91影视

Solve each equation. Check your solution.

$鈭�4a=48$

GASOLINE The average cost of regular gasoline in North Carolina increased by 73% from 2006 to 2007. If the average cost of a gallon of gas in 2006 was $2.069 what was the average cost in 2007? Round to the nearest cent.

GEOMETRY Find the value of x so the rectangles have the same area.

Solve each equation. Check your solution.

$\frac{2}{5}b=鈭�4$

Solve each equation. Then graph the solution set.

$\left|n鈭�3\right|=5$

Evaluate each expression if $x=鈭�4,\text{鈥�}y=7,\text{鈥刟苍诲}z=鈭�9$.

$\left|3x鈭�2\right|+2y$

Solve each equation. Check your solution.

$\frac{22鈭�w}{3}=鈭�7$

Solve each equation. Check your solution.

Translate the following sentence into an equation:

鈥淔our times the sum of 14 and c is a squared鈥�.

Evaluate each expression if $x=鈭�4,\text{鈥�}y=7,\text{鈥刟苍诲}z=鈭�9$

$\left|鈭�4y+2z\right|鈭�7z$