Additional Algo $11-4$ On$-$Order Quantity

A factory orders supplies every $7$ days. The lead time for deliveries is $6$ days. Demand for glass averages $17$ pounds per day with a standard deviation of $2$ pounds. The holding cost for glass is $$0\mathrm{.}49$ per pound per day. The factory wants to achieve an in$-$stock probability rate of $99\%$ for glass.

On average, how many pounds of glass will the factory have on order?

On$-$order inventory

pounds