CST$-59140$ restaurant produces and sells hamburgers. Each burger sells for $$11.$ During December, the restaurant sold $10,000$ burgers $($the average amount sold each month$).$ The restaurant employs cooks, servers, and one supervisor $($the owner, Carol Johnson$).$ All cooks and servers are part$-$time employees. The restaurant maintains a pool of part$-$time employees so that the number of employees scheduled can be adjusted to the changes in demand.

A janitor is hired to clean the building on a weekly basis. The building is leased from a local real estate company. The building has no seating capabilities. All orders are filled on a drive$-$through basis.

The supervisor spends $50\%$ of her time supervising food production, and the balance of her time supervising counter staff and on various other sales and administrative activities. The following costs were incurred during December:

$\backslash$table$[[$Hamburger Meat,$$4,000$