Formulate this problem as an integer programming model. Problem 2: An MBA class with 20 students has a budget of $56,250 to spend on the following items. What are the constraints to describe this purchasing situation? Item No. 1 2 3 Item Cost Note iPads for everybody $750/unit Must get a cover if these are purchased iPad covers with MBA logo $25/unit Not needed unless we buy iPads Speaker series $15,000 Can't afford both this and the iPads Subscriptions to the Wall Street Don't need if we have the electronic Journal $10/unit version Subscriptions to the electronic version of the Wall Street Journal $5/unit Worthless without the iPads 4 5