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16. [12 Points] DETAILS WANEFMAC7 6.3.001. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Maximize p = 2x + y subject to x+2y8 x+y55 x+y55 x20,y20. (Z) Need Help? (X. Y) 1 7. [I1 Points] DETAILS WANEFMAC7 5.1 .011. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Solve for x, y, z and w. (Enter your answers as a comma-separated list.) x + y y + z 3 5 z + w w _ 9 6 (X.y.2.W)=( U Need Help? 1B. [14 Points] DETAILS WANEFMAC7 6.5.035. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Politim Use duality to answer the following application. The political pollster Canter is preparing for a national election. It would like to poll at least 1,900 Democrats and 1,900 Republicans. Each mailing to the East Coast gets responses from 100 Democrats and 50 Republicans. Each mailing to the Midwest gets responses from 100 Democrats and 100 Republicans. Each mailing to the West Coast gets responses from SD Democrats and 100 Republicans. Mailings to the East Coast cost $40 each to produce and mall, mailings to the Midwest cost $60 each, and mailings to the West Coast cost $50 each. How many mailings should Canter send to each area of the country to get the responses it needs at the least possible cost? (East Coast, Midwest, West Coast) = (:l ) What is the lowest possible cost? * [:1 What are the shadow costs of a Democratic response and of a Republican response? 3; :] per Democrat 3; S per Republican Need Help? 19. [12 Points] DETAILS WANEFMAC7 6.4.008. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Maximize p : 10x + 10y + 152 subject to x y+zsl4 2x2y+2215 y+za 6 x20,y20,220. w:(:l)