Jake's Roof Repair has provided the following data concerning its costs: Fixed Cost per Month $ 21,400 Wages and salaries Parts and supplies Equipment depreciation Truck operating expenses Rent Administrative expenses Cost per Repair-Hour $15.00 $ 7.40 $ 0.50 $ 1.50 $ 2,760 $ 5,770 $ 4,790 $ 3,820 $0.70 ut ht nces For example, wages and salaries should be $21,400 plus $15.00 per repair hour. The company expected to work 2700 repair-hours May, but actually worked 2,600 repair-hours. The company expects its sales 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 salaries Parts and supplies Equipment depreciation Truck operating expenses