Now consider Exercise 13 with a marginal unit quantity discount. Demand for fasteners at W. W. Grainger is 20,000 boxes per month. Holding cost at Grainger is 20 percent per year. Each order incurs a fixed cost of $400. The supplier offers a marginal unit discount pricing scheme with a price of $5 per box for the first 30,000 and a price of $4.90 per unit for each unit above 30,000 in an order. How many boxes should Grainger order per replenishment

Which of the following best explains why online retail companies have an advantage over regular stores? a. their employees make less money because they mostly perform unskilled tasks. b. they are able to keep distribution costs low by negotiating deals with shipping companies. c. their transactions require expensive state-of-the-art technological devices. d. they have a larger number of potential customers because people anywhere can buy from them.