Morrisey \& Brown, Ltd., of Sydney is a merchandising company that is the sole distributor of a product that is increasing in popularity among Australian consumers. The company's income statements for the three most recent months follow: Redo the company's income statement at the 7,500-unit level of activity using the contribution format. Required: 1. By analyzing the data from the company's income statements, classify each of its expenses (including cost of goods sold) as either variable, fixed, or mixed. 2. Using the high-low method, separate each mixed expense into variable and fixed elements. Express the variable and fixed portions of each mixed expense in the form Y=a+bX. 3. Redo the company's income statement at the 7,500-unit level of activity using the contribution format. Complete this question by entering your answers in the tabs below. Using the high-low method, separate each mixed expense into variable and fixed elements. Express the variable and fixed portions of mixed expense in the form Y=a+bX. (Round the Variable cost per unit to 1 decimal place.)