Eastern Electric currently pays a dividend of $1.67 per share and sells for $40 a share. a. If investors believe the growth rate of dividends is 5% per year, what rate of return do they expect to earn on the stock? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places.) Rate of retum 4.60 b. If investors' required rate of return is 10%, what must be the growth rate they expect of the firm? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places.) Growth rate c. If the sustainable growth rate is 2% and the plowback ratio is 0.2. what must be the rate of return earned by the firm on its new Investments? (Enter your answer as a percent rounded to 2 decimal places.) Rate of retum