imize 5x - y w subject to + w ≥ 9,000 4,000 z + w≤ ≤ 200 S x + y x ≥ 0, y ≥ 0, z ≥ 0, w ≥ 0. p= 4200 X x, y, z, w) - 200,0,0,4000 :) X

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