A school cafeteria can make pizza for approximately $$0\mathrm{.}75$ per slice. The cost of the kitchen use and cafeteria staff runs about $$300\mathrm{.}00$ per day. The Pizza Den nearby will deliver whole pizzas for $$18\mathrm{.}00$ each. The cafeteria staff cuts their pizza into ten $(10)$ pieces and serves them in the usual cafeteria line. With no cooking duties, the staff can be reduced by half, for a fixed cost of $$125\mathrm{.}00$ per day.

should the school cafeteria make or buy pizzas. Show your calculations to justify your answer