can you show me how to do 8-8?

/ expected return equal to 18 percent and $21,000 in a stock with an 8 percent expected return. What is the portfolio's expected return? What is the expected return of the following portfolio of investments, 8-7 Investment DEF UKL TUV Amount Invested 4% 24 14 $30,000 25,000 45,000 8-8 Currently, the risk-free return is 3 percent, and the expected market rate of return is 9 percent. What is the expected return of the following three- stock portfolio? CHAPTER 8: Risk and Rates of Return