The above figure shows the U.S. market for replacement cell phone batteries. The U.S. government collects tariff revenue of ________ on each battery imported

If goods A and B are complements, and if the price of good B rises, how will this affect the market equilibrium for good A?

a. Price will rise and quantity will fall. b. Price will fall and quantity will rise. c. Price and quantity will both rise. d. Price and quantity will both fall.

Free riders enjoy:

A. negative externalities from others' choices to pay for a good. B. positive externalities from others' choices to pay for a good. C. positive externalities transferred from consumers who receive subsidies. D. positive externalities from a good they choose to buy themselves.