Jake's Roof Repair has provided the following data concerning its costs: Fixed Cost Cost per Repair-Hour $15.00 $7.20 $0.50 Wages and salaries Parts and supplies Equipment depreciation : Truck operating expenses Rent Administrative expenses per Month $ 21,100 $2,750 $ 5,710 $ 1.50 $ 4,680 $ 3,830 $ 0.70 For example, wages and salaries should be $21.100 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 sales to be $50.00 per repair-hour Required: Compute the company's activity variances for May Note: 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 salanes Parts and supplies Equipment depreciation Truck operating expenses Rent Administrative expenses $ 1.500 1,500 U 720 50 150 U 4,600 None 70 F