please show formulas

1. Analyze a mixed cost using a scattergraph plot and the high-low method. 2. Prepare income statements for a merchandising company using the traditional and contribution formats: Management has concluded that shipping experse is a mised cost. Uaits shipped and the related shipping cost over the last eight quanters are: Use the data to answer the following. 1. Using the high-low method, determine a cost formula for shipping expenses