$15.$ PQR$,$ Inc., has an issue of preferred stock outstanding that pays a $$6\mathrm{.}27$ dividend every year, in perpetuity. If this issue currently sells for $$71\mathrm{.}02$ per share, what is the required return in percent?

$16.$ The stock price of XYZ Co$.$ is $$45\mathrm{.}48.$ Investors require a $8\mathrm{.}65$ percent rate of return on similar stocks. If the company plans to pay a dividend of $$5\mathrm{.}84$ next year, what constant growth rate $($in percent$)$ is expected for the company's stock price?

$17.$ PQR Co$.$ has current earnings of $$7\mathrm{.}27$ per share, expected to grow at $3\mathrm{.}58$ percent per year. The benchmark PE for company is $29.$ What is current stock price?