Morrisey \& Brown, Limited, is the sole distributor of a product with growing sales. Its income statements for the three most recent months follow: Required: 1. By analyzing 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 9.500-unit level of activity using the contribution format