If a country's exchange rate rises, what happens to its exports and what happens to its imports?

What happens to a monopolistically competitive firm that begins to charge an excessive price for its product?

a. The firm will go out of business. b. Consumers will substitute a rival's product. c. Consumers will boycott the product. d. The government will regulate the price.

The above figure shows the marginal social benefit and marginal social cost curves of chocolate in the nation of Kaffenia. What is the efficient quantity of chocolate to produce each day?

A) zero B) 100 pounds C) 150 pounds D) 250 pounds