The Revenue and Spending Variances have been answered, what I need is how to get the activity variances?

Auto Lavage is a Canadian company that owns and operates a large automatic carwash facility near Quebec. The following table provides data concerning the company's costs:

Fixed Cost per Month

Cost per Car Washed

Cleaning supplies				$	0.40
Electricity	$	1,100		$	0.08
Maintenance				$	0.10
Wages and salaries	$	4,300		$	0.20
Depreciation	$	8,200
Rent	$	2,200
Administrative expenses	$	1,700		$	0.01

For example, electricity costs are $1,100 per month plus $0.08 per car washed. The company expects to wash 8,300 cars in October and to collect an average of $5.90 per car washed.

The actual operating results for October appear below:

Auto Lavage Income Statement For the Month Ended October 31
Actual cars washed		8,400
Revenue	$	51,070
Expenses:
Cleaning supplies		3,820
Electricity		1,734
Maintenance		1,070
Wages and salaries		6,320
Depreciation		8,200
Rent		2,400
Administrative expenses		1,683
Total expense		25,227
Net operating income	$	25,843

Required:

Complete the flexible budget performance report that shows the company's activity variances and revenue and spending variances for October. (Input all amounts as positive values. Leave no cells blank - be certain to enter "0" wherever required. Indicate the effect of each variance by selecting "F" for favorable, "U" for unfavorable, and "None" for no effect (i.e., zero variance). Omit the "$" sign in your response.)

Auto Lavage Flexible Budget Performance Report For the Month Ended October 31
	Activity Variances		Revenue and Spending Variances
Revenue	$	F	$	F
Expenses:
Cleaning supplies		U		U
Electricity		U		F
Maintenance		U		U
Wages and salaries		U		U
Depreciation
Rent				U
Administrative expenses		U		F
Total expense		U		U
Net operating income	$	F	$	F