all parts please!

You are considering acquiring a firm that you believe can generate expected cash flows of $30,000 a year for 10 years, then generate $10,000 forever. However, you recognize that those cash flows are uncertain. a. Suppose you believe that the beta of the firm is 0.35. How much is the firm worth if the risk-free rate is 4.5% and the expected rate of return on the market portfolio is 9%? b. By how much will you overvalue the firm if its beta is actually 0.7