Milden Company is a distributor that wants to start using a contribution format income statement for planning purposes. The company analyzed its expenses and developed the following cost formulas: Because shipping expense is a mixed cost, the company needs to estimate the variable shipping expense per unit sold and the fred shipping expense per quarter using the following data: Required: 1. Using the high-low method, estimate a cost formula for shipping expense in the form Y=a+bX 2 . In the first quarter of Year 3 , the company plans to sell 43,000 units at a selling price of $67 per unit. Prepare a contribution format income statement for the quartec: Complete this question by entering your answers in the tabs below. In the first quarter of Year 3 , the company plans to sell 43,000 units at a selling price of $67 per unit. Frepare a contribution format income statement for the quarter