4. TIAA-CREF manages money for a variety of companies. It has three primary investments that it uses: The bonds retum 4%, the traditional stock funds retum 9%, and the growth stocks return 14%. The company always invests at least 20% of its portfolio in bonds. It also wants to invest at least twice as much in traditional stocks as it does in growth stocks. If the company has $2,000,000 to invest, how should it break down the investment in order to maximize return? Determine what you are doing - (maximizing or minimizing) What value are you maximizing minimizing? Gi.e decision variable()) What variable controls that value? (1.e objective function) What limits your answer? (e. constraints)