Question: In Problems, use the simplex method or Excel. Assume that all variables are nonnegative. Minimize f = 10x + 30y + 35z subject to x

In Problems, use the simplex method or Excel. Assume that all variables are nonnegative.

Minimize f = 10x + 30y + 35z subject to
                                   x + y + z ≤ 250
                                   x + y + 2z ≥ 150
                                 2x + y + z ≤ 180

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