Sheridan provides environmentally friendly lawn services for homeowners. Its operating costs are as follows.

$\backslash$table$[[$Depreciation $($straight$-$line$),$$$1,400$ per month$],[$Advertising$,$$$100$ per month$],[$Insurance$,$$$4,875$ per month$],[$Weed and feed materials,$$21$ per lawn$],[$Direct labor,$$10$ per lawn$],[$Fuel$,$$$3$ per lawn$]]$

Sheridan charges $$85$ per treatment for the average single$-$family lawn. For the month ended July $31,2025,$ the company had total sales of $$12,750.$