In the model of monopolistic competition, trade costs between countries cause A) marginal costs of exported goods to exceed the marginal costs of goods sold domestically. B) all firms that can earn a profit on domestic sales to export their goods at higher prices. C) countries to negotiate the elimination of trade costs by mutual subsidization of trade. D) marginal costs of goods sold domestically to exceed the marginal costs of exported goods. E) all firms that can earn a profit on domestic sales to export their goods at lower prices.

Suppose matt and bree go out to get pizza. they order breadsticks and a large pepperoni pizza. after eating the breadsticks, and one piece of pizza bree decides to have an additional piece, but she does not eat a third piece. if bree is a rational individual why did she not eat the third piece of pizza? the marginal cost of the

4. suppose that pollution in a neighborhood comes from two factories, with marginal benefit curves given by mb1 = 12 – p1 and mb2 = 8 – p2. the level of pollution in the neighborhood is given by p = p1 + p2. the government wants to limit pollution by instituting a pollution-rights market. the government’s desired level of p is 10, so it prints 10 pollution rights and offers them for sale to the firms.a)find the equilibrium selling price of a pollution right, as well as the allocation of rights (and hence pollution levels) across the two factories. b)repeat part (a) for the case where the government’s desired level of pollution equals 14. c)comment on the usefulness of a pollution rights market in achieving efficient levels of pollution abatement.

Which of the following is an effective strategy when interest rates are falling? a. use long-term loans to take advantage of current low rates. b. use short-term loans to take advantage of lower rates when you refinance a loan. c. deposit to a short-term savings instrumentals to take advantage of higher interest rates when they mature. d.select short-term savings instruments to lock in earnings at a current high rates.