Fixed Cost per Month $21,000 Cost per Repair-Hour Wages and salaries Parts and supplies Equipment depreciation $ 2,720 Truck operating expenses $ 5,760 Rent Administrative expenses $3,840 $15.00 $ 7.30 $ 0.50 $ 1.50 $ 4,690 $0.60 For example, wages and salarles should be $21,000 plus $15.00 per repalr-hour. The company expected to work 2,700 repalr-hours In May, but actually worked 2,600 repalr-hours. The company expects Its sales to be $45.00 per repalr-hour Requlred Compute the company's activity varlances for May. (Indicate the effect of each varlance by selecting "F" for favorable, "U" for unfavorable, and "None" for no effect (I., zero variance). Input all amounts as positive values.) Jake's Roof Repair Activity Variances For the Month Ended May 31 Revenue ages and salaries Parts and supplies Equipment depreciation Rent Administrative expenses Total expense Net operating income