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 company's costs: For example, electricity costs are $1,200 per month plus $0.05 per car washed. The company expects to wash 8,300 cars in August and to collect an average of $6.70 per car washed. The actual operating results for August are as follows: Required: Calculate 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. Do not round intermediate calculations.)