1) A firm maximizes its profit by producing output up to the point where marginal
revenue equals marginal cost
a.only when the market is a monopoly.
b.only when the market is a monopoly or monopolistically competitive.
c.only when the market is monopolistically competitive or perfectly competitive.
d.when the market is perfectly competitive, monopolistically competitive, or
monopolistic.
2) Taxes can be justified if the government uses the revenue to
(i)provide public goods such as national defense.
(ii)clean up negative externalities such as water pollution.
(iii)regulate a common resource such as fish in a public lake.
(iv)provide goods with positive externalities such as medical research.
a.(ii) only
b.(ii) and (iii) only
c.(i), (ii), and (iii) only
d.(i), (ii), (iii), and (iv)
3) Which of these types of firms can earn a positive economic profit in the long run?
a.monopolies, but not competitive firms or monopolistically competitive firms
b.monopolies and monopolistically competitive firms, but not competitive firms
c.monopolies, monopolistically competitive firms, and competitive firms
d.No firms earn positive economic profit in the long run. Entry will reduce all firms’
economic profit to zero in the long run.
4) Figure 7-16