The total cost (in dollars) of manufacturing x auto body frames is
C(x)=60,000+300x
(A) Find the average cost per unit if 500 frames are produced.
(B) Find the marginal average cost at a production level of 500 units and interpret the results.
(C) Use the results from parts (A) and (B) to estimate the average cost per frame if 501 frames are produced.