Answer:
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 Â 630
20X Â 630 -150
20X Â 480
Divide both sides by 20 to solve for X;
X 480/20
X Â 24
Therefore, you must sell at least 24 cell phones.