An investor has $610,000 to invest in bonds. Bond A yields an average of 8% and the bond B yields 7%. The investor requires that at least 3 times as much money be invested in bond A as in bond B. You must invest in these bonds to maximize his return. This can be set up as a linear programming problem. Introduce the decision variables: x = dollars invested in bond A y = dollars invested in bond B Compute x + y . $ . Round to the nearest cent.