Submit a filled out hard-copy LP Template for each problem; also submit an Excel spreadsheet for each problem.

22. A trust officer at the Blacksburg National Bank needs to determine how to invest $100,000 in the following collection of bonds to maximize the annual return. Annual Return Bond Risk Tax-Free A B C D E 9.5% 8.0% 9.0% 9.0% 9.0% Maturity Long Short Long Long Short High Low Low High High Yes Yes No Yes No The officer wants to invest at least 50% of the money in short-term issues and no more than 50% in high-risk issues. At least 30% of the funds should go in tax-free investments and at least 40% of the total annual return should be tax free. a. Formulate an LP model for this problem. b. Create a spreadsheet model for this problem and solve it using Solver. c. What is the optimal solution