Question

You earn $40 a data you job selling cellphones. You earn extra $15 dollars for every cell phone you sell. You want to make at least $115 today. Write and graph an inequality that represents how many cell phones you need to sell.

Answer 1

cell phones sold=c
money made=m

m=15 times c+40
m=15c+40
make at least 115
115≤15c+40
if we solved
minus 40 both sies
75≤15c
divide both sides by 15
5≤c
must sell 5 cell phones at least