Brenda opened a pool and spa store in a lively shop$-$ ping mall and finds business to be booming but she often stocks out of key items customers want. She decides to experiment with inventory control meth$-$ ods, such as using a continuous review $($fixed$-$order quantity$)$ and$/$or periodic review $($fixed$-$order period$)$ system. The $28-$ounce bottle of Super Algaecide $($SA$)$ is a high margin SKU, but it stocks out frequently. Ten SA bottles come in each box, and she orders boxes from a vendor $160$ miles away. Brenda is busy running the store and seldom has time to review store inventory status and order the right quantity at