9 Widgetco produces widgets at plant 1 and plant 2. It costs 20x1/2 to produce x units at plant 1 and 40x1/3 to produce x units at plant 2. Each plant can produce as many as 70 units. Each unit produced can be sold for $10. At most, 120 widgets can be sold. Formulate an NLP whose solution will tell Widgetco how to maximize profit.