The rate to rent a small moving van is $30 per day, plus $0.25 per mile. The Sparkling Appliance Company rented a van because it needed an extra delivery vehicle for two days. The van cost $390. How many miles was it driven?
Total rental cost = $390 = 2($30/day) + ($0.25/mile)x   (x=number of miles)                                              330 Then 390 = 60 + 0.25x   =>   330 = 0.25 x   =>  x = ------------                                               0.25
