Problem 2. (20 points) A company needs to rent the following laptops over the year: January: 9; Feb.: 5 March: 7 April: 9 May: 10; June: 5: July - Dec :0. The laptops can be rent for the following number of months and associated costs: 1 month: 40$; 2 months: 70S: 3 months: 90S. Not all rented laptop must be ud. Formulate a LP minimizing overall renting costs