Jake's Roof Repair has provided the following data concerning its costs: Fixed Cost Cost per per Month RepairHour Wages and salaries $ 21J369 $ 15.68 Parts and supplies $ 7.39 Equipment depreciation $ 21??@ $ 0.35 Truck operating expenses $ 5,768 $ 1.78 Rent $ than Administrative expenses $ 3,858 $ 8.68 For example, wages and salaries should be $21,300 plus $15.00 per repairhour. The company expected to work 2,600 repairhours in May, but actually worked 2,500 repairehours. The company expects its sales to be $53.00 per repairehour. 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 varia nce]. Input all amounts as positive values} Revenue Expenses Wages and salaries Parts and supplies Equipment depreciation Truck operating expenses Rent Administrative expenses Total expense Net operating income