How do firms use marketing? A firm might use marketing to A. identify the long-run equilibrium price where firms break even. B. shift the demand curve for their product to the left through advertising. C. reduce differentiation between their product and that produced by competitors. D. eliminate things that keep new firms from entering an industry. E. design their product.

Which of the following best explains the purpose of protectionist trade policies such as tariffs and subsidies? a. they make sure that governments have enough money to pay for fiscal policies. b. they give foreign competitors access to new markets around the world. c. they allow producers to sell their products more cheaply than foreign competitors. d. they enable producers to purchase productive resources from everywhere in the world.