Lavage Rapide is a Canadian company that owns and operates a large automatic car wash facility near Montreal. The following table provides estimates concerning the companys costs:

	Fixed Cost per Month	Cost per Car Washed
Cleaning supplies		$ 0.40
Electricity	$ 1,200	$ 0.09
Maintenance		$ 0.15
Wages and salaries	$ 5,000	$ 0.40
Depreciation	$ 8,100
Rent	$ 2,100
Administrative expenses	$ 1,500	$ 0.04

For example, electricity costs should be $1,200 per month plus $0.09 per car washed. The company expects to wash 8,000 cars in August and to collect an average of $6.90 per car washed. The company actually washed 8,100 cars in August.