Please put the final answer in table form. Varriano Corporation bases its budgets on the activity measure customers served. During October, the company planned to serve $30,000$ customers, but actually served $28,000$ customers. The company has provided the following data concerning the formulas it uses in its budgeting:

$\backslash$table$[[,\backslash$table$[[$Fixed$],[$element per$],[$por$]],\backslash$table$[[$Variable$],[$element per$],[$customer$]]],[$Revenue$,-,$$$3\mathrm{.}89$