AirQual Test Corporation provides on-site air quality testing services. The company provided the following cost formulas and actual results for the month of February: The company uses the number of jobs as its measure of activity. For example, mobile lab operating expenses should be $4,600 plus $33 per job, and the actual mobile lab operating expenses for February were $8,400. The company expected to work 120 jobs in February but actually worked 126 jobs. Prepare a flexible budget performance report for February. Note: Indicate the effect of each variance by selecting "F" for favorable, "U" for unfavorable, and "None" for no effect (i.e., zero variance). Input all amounts as positive values