Fixed Cost Cost per per Month Repair-Hour Wages and salaries $ 21,100 $ 15.00 Parts and supplies $ 7.40 Equipment depreciation $ 2,760 $ 0.30 Truck operating expenses $ 5,740 $ 1.80 Rent $ 4,619 Administrative expenses $ 3,900 $ 0.60 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 $44.00 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 (i.e., zero variance). Input all amounts as positive values.) > Answer is complete but not entirely correct. Jako's Roof Repair Activity Variances For the Month Ended May 31 Revenue $ 5,000 U Expenses Wages and salaries 1,500 F Parts and supplies 19,240F Equipment depreciation 50 F Truck operating expenses 170 FO Rent 0 None Administrative expenses 40 XF Total expense 2.490 3F Nanner 251 DOOOOO