Suppose that the dollar cost of producing x washing machines is c(x) = 2000 + l00x - 0.lx/2
(a) F’md the average cost of producing 100 washing machines.
(b) Find die m.ginal cost when 100 machines are produced.
© Show that the marginal cost when 100 washing machines are produced is approximately the cost of producing one more
washing machine after the :first 100 have been made, by calculating the latter cost directly.