1) If Sterling Corp's next dividend of preferred stock is $15 per share and is expected to grow by 3% per year, what must be the discount rate on

1) If Sterling Corp's next dividend of preferred stock is $15 per share and is expected to grow by 3% per year, what must be the discount rate on preferred shares if shares are currently selling for $50 per preferred share?

2) If the annual returns over a three-year span from Portfolio A are 10%, 5%, and 3%, what is the geometric average return?