Jake's Roof Repair has provided the following data conceming its costs Foxed Cost per Month $21,000 Cost per Repair-Hour $15 00 S 780 $ 055 S 1.80 Wages and salaries Parts and supplies Equipment depreciation Truck operating expenses Rent Administrative expenses S 2,800 $ 5,780 $ 4,700 S 3.890 S 0.40 For example, wages and salaries should be $21,000 plus $15.00 per repair-hour The company expected to work 2,700 repair-hours in May, but actually worked 2,600 repair-hours. The company expects its sales to be $52.00 per repair-hour Required: Compute the company's activity vanances 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 Budget Planning Budget Activity Variances Repair hours Revenue Expenses Wages and salaries Parts and supplies Equipment depreciation Truck operating expenses Rent Administrative expenses Total expenser Net operating income