Your weekly base salary is $150. you earn $20 for each cell phone that you sell. write and solve an inequality that represents the number of cell phones you must sell to make at least $630 a week.

Step-by-step explanation:

Let the number of cell phones be represented by X;

Price per cell phone = $20

$150 is a constant

Minimum goal per week = $630

The inequality will be;

150 + 20X 630

20X 630 -150

20X 480

Divide both sides by 20 to solve for X;

X 480/20

X 24

Therefore, you must sell at least 24 cell phones.

a) what number, when added to negative four, is equal to negative five?

step-by-step explanation: