The Gourmand Cooking School runs short cooking courses at its small campus. Management has identified two cost drivers it uses in its budgeting and performance reports-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 62 students enrolled in those two courses. Data concerning the company's cost formulas appear below: Instructor wages Classroom supplies Utilities Campus rent Insurance Administrative expenses Fixed Cost per Month Cost per Course $ 2,960 Cost per Student $ 270 $ 1,230 $ 80 $ 4,500 $ 2,300 $ 3,900 $ 41 $ 5 For example, administrative expenses should be $3,900 per month plus $41 per course plus $5 per student. The company's sales should average $870 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 58 students. The actual operating results for September appear below: Actual Revenue Instructor wages $ 51,040 $ 11,120 Classroom supplies Utilities Campus rent Insurance Administrative expenses Required: $ 16,590 $ 1,960 $ 4,500 $ 2,440 $ 3,800 1. Prepare the company's planning budget for September. 2. Prepare the company's flexible budget for September. 3. Calculate the revenue and spending variances for September.