Varriano Corporation bases its budgets on the activity measure customers served. During October, the company planned to serve $49,000$ customers, but actually served $50,000$ customers. The company has provided the following data concerning the formulas it uses in its budgeting:

$\backslash$table$[[,\backslash$table$[[$Fixed element$],[$per month$]],\backslash$table$[[$Variable$],[$element per$],[$customer$]]],[$Revenue$,-,$$$3\mathrm{.}87$