Refer to the graph shown. If the marginal cost external to the trade associated with the use of gasoline is $0.10 per gallon, the point on the graph corresponding to the efficient quantity and price is:

Refer to Figure 17-3. Panel D is appropriate when used to represent

A) the quantity of labor demanded by an input price taker. B) the quantity of labor supplied by someone working a fixed number of hours. C) the labor supply curve facing an input price taker. D) the highly-skilled labor market supply curve.

Which of the following is true for a monopoly?

A) P = MC B) P = MR C) P > MR D) P < MR