HELP!!!

1.10 T2972 2829x6.50)+10,00 (0) 1.2 (100): 1027 Problem 2 A post office uses 10,000 boxes a year. Carrying costs are 50 cents per box a year, and ordering costs are $100. The following price schedule applies. (800 points) c Price per Box 1,000 to 3,999 1.20 4,000 to 6,999 a. Determine the optimal order quantity. (450 points) A.) 40-J20 H Sax 100 x 100 2.4 .50 Tehow 650)+10,000 (0) +1.110,000). 10.2000 lowest To: 9h the youe bet arter u uw b. The post office open 250 days per year. Usage appears normally distributed with a standard deviation of 4 boxes per day. The lead time is 4 days. What ROP will provide a lead time service level of 90 percent? How about its safety stock? (Hint: The average daily usage equals the annual usage divided by the open days per year. 350 points) ROP = d xLt + Zod u 482 t. L -250