please answer chronologically

(18 points) Consider the following scenario. The SE department consumes 2500 sheets of paper each month. The supplier charges $2.25 for each pack of 100-sheets of paper and delivers the ordered quantity in a single delivery. The ISE department estimates their ordering costs are $30 per order, and they use a 30% annual interest rate for determining holding costs 0. (5 points) What model do you choose to use to determine the optimal order quantity? 1. (5 points) What is the appropriate order quantity of 100-sheet packs of paper? 2. (5 points) How often should an order be placed? 3. (3 points) If the lead time is 1.5 weeks fassume 52 weeks/year), when (in terms of inventory level) should the ISE department place an order