The Eastern District of CableVision Inc. is organized as a cost center. The budget for the Eastern District of CableVision Inc. for the month ended September 30, 2006, is as follows:
Sales salaries ................ $ 542,300
System administration salaries ......... 296,400
Customer service salaries ........... 101,300
Billing salaries ................ 65,300
Maintenance ................ 179,500
Depreciation of plant and equipment ..... 61,000
Insurance and property taxes ........ 27,300
Total ................... $1,273,100
During September, the costs incurred in the Eastern District were as follows:
Sales salaries .............. $ 541,600
System administration salaries ....... 296,100
Customer service salaries ......... 118,700
Billing salaries .............. 64,900
Maintenance .............. 180,500
Depreciation of plant and equipment ..... 61,000
Insurance and property taxes ......... 27,400
Total .................. $1,290,200

Instructions
1. Prepare a budget performance report for the manager of the Eastern District of CableVision Inc. for the month of September.
2. For which costs might the supervisor be expected to request supplemental reports?