Please help me with my operations research homework$9\mathrm{.}1-5.$ The Onenote Co$.$ produces a single product at three plants for four customers. The three plants will produce $60,80,$ and $40$ units, respectively, during the next time period. The firm has made a commitment to sell $40$ units to customer $1,60$ units to customer $2,$ and at least $20$ units to customer $3.$ Both customers $3$ and $4$ also want to buy as many of the remaining units as possible. Th net