Use the simplex method to maximize the following: Maximize f 4x1 + 7x2 + 8x3 subject to 3x1 + x₂ + 5x3 ≤ 20 4x1 + 5x2 + 2x3 ≤ 16 x1 ≥ 0, x₂ ≥ 0, x3 ≥ 0 If no solutions exist enter DNE in all answerboxes. 21 x2 = x3 f =

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