a. What are the characteristics of a perfectly competitive market?

b. What is the criterion used by individual firms in perfectly competitive markets when deciding whether to shutdown or continue production in the short run?

It the short run they try to make enough money.... Revenue greater t

c. What is the criterion used by individual firms in perfectly competitive markets when deciding whether to exit the market or continue production in the long run?

d. What does the market supply curve in a perfectly competitive market look like in the short run and in the long run? Explain the reason behind the shapes of these market supply curves.

e. What is the theoretical justification for supporting the creation of competitive markets? (Hint: Think about welfare economics, ie: consumer surplus, producer surplus, total surplus.)