Question 7 of 10 View Policies Show Attempt History Current Attempt in Progress 5/10 Michelle Walker owns and operates Sandhill Cakes, a bakery that creates personalized birthday cakes for a child's first birthday. The cakes, which sell for $40 and feature an edible picture of the child, are shipped throughout the country. A typical month's results are as follows: Sales revenue $840,000 Variable expenses 630.000 Contribution margin 210,000 Fixed expenses 115,000 Operating income $95,000 (a)