Here you are trying to find how much she drove "EACH" trip so you are going to have to divide 288.8 from 4 and you would get 72.2. I just wanted to explain it to make it be perfectly understandable to you.
REALLY hope this helps :)
She bought 4 Movies and 3 CDs so she spend $19.50 bc 3+3+3+3=12 so 2.50+2.50+2.50=7.50 so 7.50+12=19.50
