10. Using the demand and supply diagrams (one for each market), show what short-run changes in price and quantity would be expected in the following markets if terrorism-related worries about air safety cause travelers to shy away from air travel. Each graph should contain the original and new demand and supply curves, and the original and new equilibrium prices and quantities. For each market, write one sentence explaining why each curve shifts or does not shift.

a. The market for air travel

b. The market for rail travel

c. The market for hotel rooms in Hawaii

d. The market for gasoline