Question $5.(14$ points$)$

Sabor Inc. is a medical testing laboratory that performs several tests and analyses for hospitals in the area. Four of the tests that they perform require the use of a specialized machine that can supply $14,000$ hours per year. Information on the four lab tests follows:

$\backslash$table$[[,$Test A$,$Test B$,$Test C$,$Test D$],[$Revenue$,$$$67,$$$52,$$$48,$$$22$