Lavage Rapide is a Canadian company that owns and operates a large automatic carwash facility near Montreal The following table provides data concerning the company's costs: For example, electricity costs are $1, 300 per month plus $0.06 per car washed. The company expected to wash 8, 300 cars in August and to collect an average of $6.80 per car washed. The actual operating results for August appear below. Required: Compute the company's revenue and spending variances for August. (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.)