Wages and salaries Jake's Roof Repair provided the following data concerning Its costs: Fixed Cost Cost per Repair-Hour $ 16.00 $7.50 $ 0.55 per Month $ 21,100 $ 2,730 Truck operating expenses Rent $ 5,790 $ 1.80 $ 4,670 $ 3,820 $ 0.80 Parts and supplies Equipment depreciation Administrative expenses For example, wages and salaries should be $21,100 plus $16.00 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 $53.00 per repair-hour. Required: Compute the company's activity variances for May. Note: Indicate the effect of each varlance by selecting "F" for favorable, "U" for unfavorable, and "None" for no effect (Le., zero varlance). Input all amounts as positive values. Revenue Expenses: Jake's Roof Repair Activity Variances For the Month Ended May 31 Wages and salaries Parts and supplies Equipment depreciation Truck operating expenses Rent Administrative expenses Total expenses Net operating income