Answer:
42,000 yards
Step-by-step explanation:
The order point must account for the total usage during the lead-time plus the desired safety stock.
If the lead-time is 10 days, the daily usage is 3,000 yards, and Sully desires a safety stock of 12,000 yards, the order point must be:
![P = (3,000*10)+12,000\\P=42,000\ yards](https://img.qammunity.org/2021/formulas/business/college/ykkeoont2sdjivf93zpxpb926qh7bp9mt8.png)
Sully's order point is 42,000 yards.