Problems 11-13 are based on the following information: The stock is expected to pay $7.50 dividends next year and the dividends are expected to grow at a rate of 4.25% per year indefinitely. The current stock price is $120 and stocks beta is =1.2 Problem 11: Find the expected stock return Problem 12: Find the dividend yield Problem 13: Find the risk-free interest rate if the expected market return is 9%