The Gourmand Cooking School runs short cooking courses at its small campus. Management has identified two cost drivers it uses for budgeting purposes-the number of courses and the total number of students. For example, the school might run two courses in a month and have a total of 61 students enrolled in those two courses. Data concerning the company's cost formulas appear below: Fixed Cost per Cost per Cost per Month Course Student Instructor wages $ 2,910 Classroom supplies $ 300 Utilities $ 1,220 $ 65 Campus rent $ 4,700 Insurance $ 2,300 Administrative expenses $ 3,600 $ 40 $ 6 For example, administrative expenses should be $3,600 per month plus $40 per course plus $6 per student. The company's sales should average $900 per student. The company planned to run four courses with a total of 61 students; however, it actually ran four courses with a total of only 51 students. The actual operating results for September were as follows: Revenue Instructor wages Classroom supplies Actual $ 52,000 $ 10,920 $ 18,150 $ 1,890 Utilities Campus rent $ 4,700 Insurance $ 2,440 Administrative expenses $ 3,552 Required: Prepare a flexible budget performance report for September. 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.