9.33. A price-taking firm’s supply curve is s(P) ! 10P.

What is the producer surplus for this firm if the market price is $20? By how much does producer surplus change when the market price increases from $20 to $21?

9.34. The semiconductor market consists of 100 identical firms, each with a short-run marginal cost curve SMC(Q) ! 4Q. The equilibrium price in the market is $200. Assuming that all of the firm’s fixed costs are sunk, what is the producer surplus of an individual firm and what is the overall producer surplus for the market?