Radon Homes' current EPS is $6.20. It was $4.38 5 years ago. The company pays out 50% of its earnings as dividends, and the stock sells for $31. a. Calculate the historical growth rate in earnings. (Hint: This is a 5-year growth period.) Do not round intermediate calculations. Round your answer to two decimal places. % b. Calculate the next expected dividend per share, D1. (Hint: Do = 0.50($6.20) = $3.10.) Assume that the past growth rate will continue. Do not round intermediate calculations. Round your answer to the nearest cent. $ c. What is Radon's cost of equity, rs? Do not round intermediate calculations. Round your answer to two decimal places. %