Can somebody explain me how to resolve this exercise?.

Return to question 3 Revenue $ 57,040 10 points Expenses Cleaning supplies Electricity Maintenance Wages and salaries Depreciation Rent Administrative expenses Total expense Net operating income 7,860 1,908 2,700 6,400 8,200 2,400 1.246 30,414 $ 26,626 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.o., zero variance). Input all amounts as positive values.) Answer is complete but not entirely correct. > . Lavage Rapide Revenue and Spending Variances For the Month Ended August 31 Revenue 690 Expenses Cleaning supplies 80 X U Electricity 93 U Maintenance 30 u Wages and salaries 20 U Depreciation 0 None Rent 200U Administrative expenses 3U Total expense 34230 Net operating income $ 348 F 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 Fixed Cost per Month Cost per Car Washed $0.80 $0.99 $0.30 $0.20 Cleaning supplies Electricity Maintenance Wages and salaries Depreciation Rent Administrative expenses $1,200 $4,400 $8,200 $2,2ee $1,600 $0.03 For example, electricity costs are $1,200 per month plus $0.09 per car washed. The company expects to wash 8,200 cars in August and to collect an average of $6.70 per car washed. The actual operating results for August are as follows: Lavage Rapide Income Statement For the Month Ended August 31 Actual cars washed 8,300 $52.040 Revenue Expenses Cleaning supplies Electricity Maintenance Wages and salaries Depreciation Rent Administrative expenses Total expense Net operating Income 7,960 1,908 2,700 6,400 8,200 2,400 1,746 30,414 $ 26,626 Required: Calculate the company's revenue and spending vanances for August (indicate the effect of each variance by selecting "F" for favorable, "U" for unfavorable, and "None" for no effect fi.e., zero variance). Input all amounts as positive values.)