Shaak Corporation uses customers served as its measure of activity. The company bases its budgets on the following information: Revenue should be $$4\mathrm{.}20$ per customer served. Wages and salaries should be $$21,800$ per month plus $$1\mathrm{.}00$ per customer served. Supplies should be $$0\mathrm{.}70$ per customer served. Insurance should be $$5,700$ per month, Miscellaneous expenses should be $$3,900$ per month plus $$0\mathrm{.}30$ per customer served.

The company reported the following actual results for October:

$\backslash$table$[[$Customers served,$22,500],[$Revenue$,$$$137,300$