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: 
                                                   Fixed Cost per Month                  Cost per Course                    Cost per Student 
Instructor wages                                                                                      $2,950 
Classroom supplies                                                                                                                                     $280 
Utilities                                                $1,220                                           $65 
Campus rent                                       $4,800 
Insurance                                            $2,300 
Administrative expenses                 $4,000                                           $44                                              $4 
For example, administrative expenses should be $4,000 per month plus $44 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 51 students. The actual operating results for September appear below:
Actual
Revenue                                                      $51,660
Instructor wages                                       $11,120
Classroom supplies                                  $17,830
Utilities                                                        $1,840
Campus rent                                              $5,000
Insurance                                                    $2,240
Administrative expenses                          $3,734
Required:
Prepare a flexible budget performance report that shows both revenue and spending variances and activity variances for September.