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

	Fixed Cost per Month			Cost per Car Washed
Cleaning supplies				$	0.80
Electricity	$	1,100		$	0.10
Maintenance				$	0.10
Wages and salaries	$	4,500		$	0.30
Depreciation	$	8,500
Rent	$	2,100
Administrative expenses	$	1,300		$	0.04

For example, electricity costs are $1,100 per month plus $0.10 per car washed. The company expects to wash 8,100 cars in August and to collect an average of $5.90 per car washed. The company actually washed 8,200 cars in August.

Required:

Calculate the company's activity variances for August.