Auto Lavage is a Canadian company that owns and operates a large automatic carwash facility near Quebec. The following table provides data concerning the company's costs:

$\backslash$table$[[,\backslash$table$[[$Fixed cost$],[$per Wonth$]],\backslash$table$[[$Cast per$],[$car Washed$]]],[$Cleaning supplies,,$$6\mathrm{.}70$