Johnson Electronics (JE) sells electrical and electronic components through catalogs. Catalogs are updated and printed twice every year. Each printing run incurs a fixed cost of $5,000, which involves catalog design cost and printing setup cost. The variable production cost is $5 per catalog. Annual demand for catalogs is estimated to be normally distributed with a mean of 16,000 and standard deviation of 4,000. Data indicates that, on average, each customer ordering a catalog generates a profit of $35

1. Suppose that each unsold catalog can be sold to a recycling company for a price of $1. What is the optimal ordering quantity?