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

	Fixed Cost per Month			Cost per Car Washed
Cleaning supplies				$	0.50
Electricity	$	1,000		$	0.09
Maintenance				$	0.20
Wages and salaries	$	4,700		$	0.20
Depreciation	$	8,300
Rent	$	2,100
Administrative expenses	$	1,300		$	0.04

For example, electricity costs are $1,000 per month plus $0.09 per car washed. The company expected to wash 8,300 cars in August and to collect an average of $6.60 per car washed. The company actually washed 8,400 cars.

The actual operating results for August appear below.

Lavage Rapide Income Statement For the Month Ended August 31
Actual cars washed		8,400
Revenue	$	56,880
Expenses:
Cleaning supplies		4,650
Electricity		1,717
Maintenance		1,900
Wages and salaries		6,720
Depreciation		8,300
Rent		2,300
Administrative expenses		1,532
Total expense		27,119
Net operating income	$	29,761

Required:

Compute the company's activity variances for August.