PLEASE HELP ME WITH ANSWERING ALL OF THESE QUESTIONS!!

The expected constant-growth rate of dividends is % for a stock currently priced at $64, that just paid a dividend of $8, and has a required return of 15%? What would be the price of a stock that pays an annual fixed dividend of $1 for ten years, and then the dividend payment increases by 1% every year, and the required rate of return is 5% annually? $ Suppose you purchased a stock a year ago. Today, you receive a dividend of $17 and you sell the stock for $127. If your return was 13%, at what price did you buy the stock? $ You want to construct a portfolio containing equal amounts of U.S. Treasury bills, stock A, and stock B. If the beta of the stock A is 1.65 and the beta of the portfolio is 1.04, what does the beta of stock B have to be