Jay Corporation has decided to prepare contribution income statements for internal planning. 8 After analvzine expenses, the comnanv has determined the followino cost patterns. Shipping has been determined to be a mixed cost with the following total costs and units: Use the data to answer the following. (Use cells A4 to C26 from the given information, as well as A35 to C44, and AS1 to C64 to complete this question. All answers should be input and displawed as positive values.) 1. Using the high-low method, determine a cost formula for shipping costs