U.S. Suppose you are the fund manager of a portfolio that has three asset classes. government T-bills account for 25% of the portfolio, large-company stocks consti- tute 50%, and small-company stocks make up the remaining 25%. If the expected returns are 4.8% for the T-bills, 15.2% for the large-company stocks, and 23.4% for the small-company stocks, what is the expected return of the portfolio