Jake's Roof Repair has provided the following data concerning its costs: Fived 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 $ 7.20 $ 0.55 $ 160 $ 2.720 $ 5.720 $ 4,660 $ 3.890 $ 0.50 For example, wages and salaries should be $21,400 plus $15.00 per repair hour. The company expected to work 2,800 repair-hours in May, but actually worked 2.700 repair hours. The company expects its sales to be $47.00 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.) Jake's Roof Repair Activity Variances For the Month Ended May 31 Flexible Planning Budget Budget Activity Variances Repair-hours Revenue Expenses: Wages and salaries Parts and supplies Equipment depreciation Truck operating expenses Rent Administrative expenses Total expense Net operating income None