Required 1 Required 2 Required 1 Required 2 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 27,000 units at a selling price of $53 per unit. Prepare a contribution format income statement for the quarter. Complete this question by entering your answers in the tabs below. Using the high-low method, estimate a cost formula for shipping expense in the form Y=a+bX. (Round the Variable cost per unit to 2 decimal places.)