Please answer all question I am stuck!

QUESTION $1$

A stock is expected to pay its next annual dividend of $$4$ one year from today. If dividends are expected to grow perpetually at a $5\%$ rate, what is the stock$$s value given a $12\%$ required return?

QUESTION $2$

A stock just yesterday paid a dividend of $$5.$ If dividends are expected to grow at a $6\%$ rate, how much would an investor who required a $13\%$ rate of return be willing to pay?

QUESTION $3$

A stock just yesterday paid an annual dividend of $$3.$ If you believe dividend growth will average $5\%$ and the stock sells for $$50,$ what would your expected return be$?$

Formatting: Input $"8\mathrm{.}72"$ for $8\mathrm{.}72\%.$

QUESTION $4$

A stock is expected to pay its next annual dividend of $$3$ one year from today. For an investor who requires a $12\%$ rate of return, what dividend growth rate would be required to justify a $$50$ valuation?

QUESTION $5$

The average P$/$E ratio in the healthcare industry is $18\mathrm{.}61.$ For a healthcare company with $$25$ million in net income and $10$ million shares outstanding, what valuation does the P$/$E approach suggest?