please help me answer a-d and it would help to get explanation

the investor's required rate of retum is 15 percent, . the expected level of earnings at the end of this year (Ex) is $8, the retention ratio is 40 percent, the retum on equity (ROE) is 18 percent (that is, it can earn 18 percent on reinvested earnings), and similar shares of stock sell at multiples of 7.693 times earnings per share. Questions: a. Determine the expected growth rate for dividends. b. Determine the price earnings ratio (PE). c. What is the stock price using the P/E ratio valuation method? d. What is the stock price using the dividend discount model