Jake's Roof Repair has provided the following data concerning its costs: Wages and salaries Parts and supplies Equipment depreciation Truck operating expenses Rent Administrative expenses Fixed Coat per Month $ 21,200 $ 2,710 $ 5,740 $ 4,690 53,870 Cost per Repair-Hour $15.00 $ 7.60 $0.40 $ 1.80 $ 0.60 For example, wages and salaries should be $21,200 plus $15.00 per repair-hour. The company expected to work 2,600 repair-hours in May, but actually worked 2,500 repair-hours. The company expects its soles to be $46.00 per repair-hour Required: Compute the company's activity variances for May. (Indicate the effect of each variance by selecting "F" for favorable, "U" for unfavorable, and "None" for no effect (ie, zero variance), Input all amounts as positive values.) Jake's Roof Repair Activity Variances For the Month Ended May 31 Revenue Expenses: Wages and salarios Parts and supplies Equipment depreciation Truck operating expenses Rent Administrative expenses Total expense Net operating income