Lavage Rapide owns and operates a large automatic car wash facility near Montreal. The following table provides estimates concerning the company's costs: For example, electricity costs should be $1,200 per month plus $0.08 per car washed. The company expects to wash 8,200 cars in August and to collect an average of $6.20 per car washed. The company actually washed 8,300 cars in August. Required: Calculate the company's activity variances for August. Note: Indicate the effect of each variance by selecting "F" for favorable, "U" for unfavorable, and "None" for no effect (i.e., zero variance). Input all amounts as positive values. \begin{tabular}{|l|l|} \hline \multicolumn{2}{|c|}{ Lavage Rapide } \\ \hline \multicolumn{2}{|c|}{ For the Month Ended August 31} \\ \hline Revenue & \\ \hline Expenses: & \\ \hline Cleaning supplies & \\ \hline Electricity & \\ \hline Maintenance & \\ \hline Wages and salaries & \\ \hline Depreciation & \\ \hline Rent & \\ \hline Administrative expenses & \\ \hline Total expenses & \\ \hline Net operating income & \\ \hline \end{tabular}