Mr. Jones charged Roberta $32 for parts and $15 per hour for labor to repair her
bicycle. He spent 3 hours repairing her bike. Which expression would be used to
correctly calculate the amount Roberta owes him?
1. 32 x 3 + 15
2. 32 + 3 x 15
3. 3 x 32 x 15
4. 3x(32+15)