69, 0.05 points TipTop Flight School offers fying lessons at a small municipal airport. The school's owner and manager has been attempting to evaluate performance and control costs using a variance report that compares the planning budget to actual results. A recent variance report appears below: TipTop Flight School Variance Report For the Month Ended July 31 Actual Planning Results Budget Variances Lessons 205 $44,940 $44,000 $940 F Revenue Expenses instructor wages 12,770 12,600 170 U Aircraft depreciation 7,175 7,000 175 U 4.610 4,200 410 U Maintenance 3,610 3.470 140 U Ground facility expenses 970 2,040 70 F Administra 4.285 4,380 95 F 34.420 33,690 730 U Total expense $10,520 $10,310 $210 F Net operating income After several months of using such variance reports, the owner has become frustrated. For example, she is quite confident that instructor wages were very tighty controlled in July, but the report shows an unfavorable variance The planning budget was developed using the following formulas, where q is the number of lessons Cost Formulas Revenue Instructor wages Aircraft depreciation Fuel $219 s 670 $149 Maintenance Ground facility $1,640 $24 expenses $4,180 $19 ministration