Final answer:
Lily should reorder more stuffed animals when her inventory level falls to 366, which is her desired safety stock level equivalent to 3 weeks of demand.
Step-by-step explanation:
Lily has been experiencing a high demand for stuffed animals and is looking to increase her safety stock to ensure she does not run out. Currently, with a lead time delivery of 2 weeks and a demand of 122 stuffed animals per week, she wants to have a safety stock equal to 3 weeks of demand.
To calculate how low her inventory can get before needing to reorder, we consider her desired safety stock level. She wants a safety stock that covers 3 weeks of demand, which would be:
3 weeks * 122 stuffed animals per week = 366 stuffed animals
Therefore, Lily should reorder more stuffed animals when her inventory level falls to 366 to maintain a safety stock equivalent to 3 weeks of demand.