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 $4,800 plus $30 per job, and the actual mobile lab operating expenses for February were $8,840. The company expected to work 140 jobs in February but actually worked 150 jobs. Required: 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