Suppose that it costs the automobile manufacturer $9000 to produce a hybrid and that the demand for hybrids (in thousands) for a price of p thousand dollars is expressed by f(p) = 40 - 3p. What price for hybrids will maximize the company's profit? How would the answer change if f(p) = 500p-2?

Mikkelson corporation's stock had a required return of 12.50% last year, when the risk-free rate was 3% and the market risk premium was 4.75%. then an increase in investor risk aversion caused the market risk premium to rise by 2%. the risk-free rate and the firm's beta remain unchanged. what is the company's new required rate of return? (hint: first calculate the beta, then find the required return.) do not round your intermediate calculations.