For example, if the marginal cost of producing the 30th unit of output is $9.30, then it cost $9.30 to increase production from 29 to 20 units. The marginal cost C (in dollars) to produce x bicycles is given C(x)=x 2−40 x 600. How many bicycles can be manufactured so that the marginal cost equals $200? That is, solve C(x)=200.
