Answer:
She drove 88 miles
Explanation:
Total cost = fee per day + cost per mile * miles driven
We know the total cost was 70.46
The fee per day was 29.95 *2 =59.90. She kept the van 2 days.
The cost per mile was .12
Substitute in what we know
70.46 = 59.90 +.12 m
Subtract 59.90 from each side
70.46-59.90 = 59.90-59.90 +.12 m where m is the miles driven
10.56 = .12m
Divide each side by .12
10.56/.12 = .12m/.12
88=m