two courses in a month and have a total of 62 students enrolled in those two courses. Data concerning the company's cost formulas appear below: For example, administrative expenses should be $3,900 per month plus $44 per course plus $7 per student. The company's sales should average $860 per student. The company planned to run four courses with a total of 62 students; however, it actually ran four courses with a total of only 52 students, The actual operating results for September were as follows: Required: Prepare a flexible budget performance report that shows both revenue and spending variances and activity variances for September. (Indicote the effect of each variance by selecting "F" for fovorable, "U" for unfavorable, and "None" for no effect (i.e., zero variance). Input all amounts as positive volues.)