28 Writin... P Do Ho Question 3 of 3 View Policies Show Attempt History < Current Attempt in Progress 0.5/1 E Julianna Abdallah owns and operates FirstCakes, 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 112,000 Operating income $ 98,000 (a) Your answer is correct. What is FirstCakes' contribution margin per unit?