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 60 students enrolled in those two courses. Data concerning the company's cost formulas appear below: Fixed Cost Cost per per Month Instructor vages Classroom supplies Utilities Campus rent Insurance Course $2,910 Cost per Student $ 290 Administrative expenses $ 1,230 $ 5,100 $2,200 $3,600 $ 55 $ 45 $ 4 For example, administrative expenses should be $3,600 per month plus $45 per course plus $4 per student. The company's sales should average $880 per student. The company planned to run four courses with a total of 60 students; however, it actually ran four courses with a total of only 52 students. The actual operating results for September appear below: Revenue Instructor vages classroom supplies Utilities Campus rent Insurance Administrative expenses Required: Actual $ 49,900 $10,920 17,250 $1,860 $5,100 $ 2,340 $ 3,446 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.