A car repair shop charged $80 per hour for labor and $210 for the parts of a car. If the total cost of repair for the car was $490, how many hours did it take to repair the car?

First, you subtract 210 from 490. 490-210=280 Then we divide 280 by 80. 280/80= 3.5. Then, to check your answer, you do the opposite. 3.5*80+210=490 So the answer is 3.5

your answer is tree and a half hours