Kristen Lu purchased a used automobile for $9,200 at the beginning of last year and incurred the following operating costs: Depreciation ($9,200 ÷ 5 years) $ 1,840

Insurance $ 1,000

Garage rent $ 500

Automobile tax and license $ 260

Variable operating cost $ 0.12 per mile
The variable operating cost consists of gasoline, oil, tires, maintenance, and repairs. Kristen estimates that, at her current rate of usage, the car will have zero resale value in five years, so the annual straight-line depreciation is $1,840. The car is kept in a garage for a monthly fee.
1. Kristen drove the car 12,000 miles last year. Compute the average cost per mile of owning and operating the car.

2. Kristen is unsure about whether she should use her own car or rent a car to go on an extended cross-country trip for two weeks during spring break. What costs above are relevant in this decision? Assume that there is no decrease in the resale value of the car due to its use.