Jake's Roof Repair has provided the following data concerning its costs: Cost per Fixed Cost per Month $ 20,600 Wages and salaries Parts and supplies Equipment depreciation Truck operating expenses Rent Administrative expenses Repair-Hour $15.00 $ 7.30 $ 0.35 $ 1.70 $ 2,720 $ 5,730 $ 4,600 $ 3,870 $ 0.70 For example, wages and salaries should be $20,600 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.) Answer is not complete. Jake's Roof Repair Activity Variances For the Month Ended May 31 Revenue $ 145,000 X U Expenses: Wages and salaries 65,600 X F Parts and supplies F Equipment depreciation Truck operating expenses F Rent 4,600 X None Administrative expenses F F Net operating income U Total expense