1. How would each of the following affect the equilibrium price and quantity for air travel?

1. Therapeutics are developed for Covid-19, and there is no longer a health risk from the virus;
2. The price of hotels and resorts increases (assume that hotels are a complement for air travel);
3. The price of jet fuel dramatically increases;
4. New technology is developed that reduces the cost of producing aircraft; and
5. The government institutes a price ceiling below the equilibrium price for air travel.