Jake's Roof Repair has provided the following data concerning its costs: For example, wages and salarles should be $21,100 plus $15.00 per repair-hout. 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 $51.00 per repair-hour. Required: Compute the company's activity variances for May. Note: Indicate the effect of each variance by selecting "F" for favorable, "U" for unfavorable, and "None" for no effect (i.e., zero voriance). Input all omounts as positive values