Inish earns $6. 25 for each car he washes. He always puts $25 of his weekly earnings into his college savings account. This week, Inish wants to have at least $45 spending money left after putting away his savings. What is the minimum number of cars he must wash? An inequality for the situation is 6. 25x – 25 ≥ 45. Inish must wash at least cars.