please answer all, thanks

Intro You have $8,000 to invest. You've done some security analysis and generated the following data for three stocks and Treasury bills, including weights in the optimal risky portfolio (ORP) from doing Markowitz portfolio optimization: Part 1 Attempt 1/10 for 10p What is the expected retum of the optimal risky portfolio (ORP)? Part 2 Attempt 1/10 for 10p How much money should you invest in the ORP to achieve an expected return of 5% for the complete portfolio (in \$)? Part 3 Attempt 1/10 for 10p If you want to achieve an expected return of 5% for the complete portfolio, how much money should you invest in stock A (in \$)