Jake's Roof Repale has provided the following data concerning its costs: For example, wages and salarles should be $20,800 plus $15.00 per repair-hour. The company expected to work 2,900 repair-hours in May, but actually worked 2,800 repair-hours. The company expects its sales to be $48.00 per repair-hour. Required: Compute the company's activity variances for May. Note: Indicate the effect of each varlance by selecting "F" for favoroble, "U" for unfovorable, and "None" for no effect (l.e., zero varlance). Input all amounts as positive values