You have gathered the following vehicle costs: Vehicle Costs Annual depreciation Current year's loan interest Insurance License and registration fees Parking and tolls Annual mileage Miles per gallon Average gasoline price Oil changes and repairs $ 2,500 $ 650 $ 680 $65 $ 420 13,200 24 $ 3.68 per gallon $370 a. Calculate the annual variable and fixed costs of the vehicle. b. Compute the operating cost per mile.