Fixed Cost Cost per per Month Repair-Hour Wages and salaries Parte and supplies $ 21,300 $ 15.00 $ 7.60 Equipment depreciation Truck operating expenses 5 2,760 $ 0.55 $ 5,700 $ 1.80 $ 4,660 $ 3,820 $ 0.80 200 Rent Administrative expenses For example, wages and salaries should be $21,300 plus $15.00 per repair-hour. The company expected to work 3,000 repair-hours in May, but actually worked 2,900 repair-hours. The company expects its sales to be $50.00 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.) Revenue Jake's Roof Repair Activity Variances For the Month Ended May 311 Expenses: Wages and salaries Parts and supplies Equipment depreciation Truck operating expenses Rent Administrative expenses Total expense Net operating income