MSI's educational products currently are sold without any supplemental materials. The company is considering the inclusion of instructional materials such as an overhead slide presentation, potential test questions, and classroom bulletin board materials for teachers. A summary of the expected costs and revenues for MSI's two options follows: CD with Instructional Estimated demand Estimated sales price Estimated cost per unit Direct materials Direct labor Variable manufacturing overhead Fixed manufacturing overhead Unit manufacturing cost Additional development cost CD Only 31,000 units $ 27.00 Materials 31,000 units $ 42.00 $ 4.75 $ 5.25 6.00 9.00 6.00 9.25 5.50 5.50 $ 22.25 $ 29.00 $ 105,000 Required: 1. Based on the given data, compute the increase or decrease in profit that would result if instructional materials were added to the CDs. 2. Should MSI add the instructional materials or sell the CDs without them? 3-a. Suppose that the higher price of the CDs with instructional materials is expected to reduce demand to 22,000 units. Complete the table given below based on this scenario. 3-b. Should MSI add the instructional materials or sell the CDs without them? Based on the given data, compute the increase or decrease in profit that would result if instructional materials were added to the CDs. Sales Revenue Variable Costs Contribution Margin Additional Development Costs Differential Profit (Loss) CD with Instructional CD Only Incremental Materials