Exercise 3-7 (Part Level Submission) Julianna Abdallah owns and operates FirstCakes, a bakery that creates personalized birthday cakes for a child's first birthday. The cakes, which sell for $64 and feature an edible picture of the child, are shipped throughout the country. A typical month's results are as follows Sales revenue1,121,280 Variable expenses Contribution margin Fixed expenses 840,960 280,320 134,720 Operating income 145,600 ? (a) Your answer is correct. How many cakes will Julianna Abdallah have to sell if she wants to earn $179,392 in operating income each month? 19632 cakes