Please explain step by step all of them i will vote your answer! Much appriciate

Please explain step by step all of them i will vote your answer! Much appriciate, this is my last exp question thats why i cant send seperately.

2. Calculate the Expected Return, Variance, and Standard Deviation for a portfolio formed with Stocks 1 and 2. The Expected Return for Stock 1 is 19%, the Standard Deviation for Stock 1 is 22%, the Expected Return for Stock 2 is 30%, the Standard Deviation for Stock 2 is 27%, the Weight of Stock 1 in the portfolio is 70%, and the Correllation Coefficient between the returns on Stocks 1 and 2 is -0.94. 3. Find the next dividend on a stock given that the required return is 10.02%, the dividend growth rate is 1.09%, and the stock price is $33.15 per share. 4. What is the present value of cash flows of $600 at the end of years through 4, a cash flow of a negative $900 at the end of year 5, and cash flows of $1000 at the end of years 6 through 12 if the appropriate discount rate is 6%