Barbara Flynn is in charge of maintaining hospital supplies at General Hospital. During the past year, the mean lead time demand for bandage BX5 was 75 (and was normally distributed). Furthermore, the standard deviation for BX-5 was 7. Ms. Flynn would like to maintain a 95% service level. Refer to the standard normal table for z-values. a) What safety stock level do you recommend for BX5 ? Safety stock = units (round your response to the nearest whole number). Rocky Mountain Tire Center sells 7,000 go-cart tires per year. The ordering cost for each order is $40, and the holding cost is 50% of the purchase price of the tires per year. The purchase price is $26 per tire if fewer than 200 tires are ordered, $19 per tire if 200 or more-but fewer than 5,000 -tires are ordered, and $15 per tire if 5,000 or more tires are ordered. a) How many tires should Rocky Mountain order each time it places an order? Rocky Mountain's optimal order quantity is units (enter your response as a whole number)