Eastern Electric currently pays a dividend of $$1\mathrm{.}89$ per share and sells for $$36$ a share.

If investors believe the growth rate of dividends is $3\%$ per year, what rate of return do they expect to earn on the stock?

Note: Do not round intermediate calculations. Enter your answer as a percent rounded to $2$ decimal places.

If investors' required rate of return is $12\%,$ what must be the growth rate they expect of the firm?

Note: Do not round intermediate calculations. Enter your answer as a percent rounded to $2$ decimal places.

If the sustainable growth rate is $2\%$ and the plowback ratio is $0\mathrm{.}4,$ what must be the rate of return earned by the firm on its new investments?

Note: Enter your answer as a percent rounded to $2$ decimal places.