Carlos rivera purchased a car three years ago at a price of $21,950. the car depreciates 10% of its purchase price each year for ten years. the complete car cost guide states the annual variable cost of the car to be $1,150 a year with insurance costing $1,259 a year. for each year, rivera paid $140 for license and registration fees and he drove the car about 17,000 miles a year. find the cost per mile.