A supply company manufactures masks and ventilators for hospitals. To maintain hugh quality, the company should not manufacture more than a total of 120 masks and ventilators per day. To meet customer demand, the company must manufacture between 10 and 50 masks per day, inclusive. The company must manufacture at least 40 and no more than 100 ventilators per day. The company’s profits are $10 per mask and $65 per ventilator