Stuart Concrete Company pours concrete slabs for single-family dwellings. Lancing Construction Company, which operates outside Stuarts normal sales territory, asks Stuart to pour 47 slabs for Lancings new development of homes. Stuart has the capacity to build 440 slabs and is presently working on 150 of them. Lancing is willing to pay only $2,670 per slab. Stuart estimates the cost of a typical job to include unit-level materials, $960; unit-level labor, $460; and an allocated portion of facility-level ov