Lorenzo operates a car wash. Incoming cars are put on an automatic conveyor belt. Cars are washed as the conveyor belt carries them from the start station to the finish station. After a car moves off the conveyor belt, it is dried manually. Workers then clean and vacuum the inside of the car. Lorenzo serviced 80,000 cars in 2012. Lorenzo reports the following costs for 2012:

                                            

Required
1. Classify each account as variable or fixed with respect to the number of cars washed. Explain.
2. Suppose Lorenzo washed 90,000 cars in 2012. Use the cost classification you developed in requirement 1 to estimate Lorenzo’s total costs in 2012. Depreciation is computed on a straight-line basis.