7. (-18.33 Points] DETAILS TANFIN12 4.R.008. Use the simplex method to solve the linear programming problem. Minimize C--- 3y + 2x subject to 2x + y + 42 S 30 x + 2y + ZS 10 2x - y + 2z s 20 x 20, 20, 220 The minimum is C - | at (x, Y. 2)-( 8. (-/8.33 Points) DETAILS TANFIN12 4.R.026. Sandra has at most $150,000 to invest in stocks, bonds, and money market funds. She expects annual yields of 15%, 10%, and 8%, respective $37,500 to be invested in money market funds and requires that the amount invested in bonds be greater than or equal to the sum of her inves how much she should invest in each vehicle to maximize the return on her investments