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 61 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 Cost per Cost per Month Course Student $2,920 $300 $1,220 $ 55 $4,600 $2,300 $3,700 $ 45 $ 4 For example, administrative expenses should be $3,700 per month plus $45 per course plus $4 per student. The company's sales should average $870 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 59. students. The actual operating results for September appear below: Revenue Instructor wages Classroom supplies Utilities Campus rent Insurance Actual $50,170 $10,960 $18,150. $ 1,850 $ 4,600 $ 2,440 Administrative expenses $ 3,550 Required: 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