Laura Hall owns and operates WildhorseCakes, 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 Variable expenses Contribution margin Fixed expenses Operating income $844,000 633,000 211,000 150,000 $61,000 (a) Your answer is incorrect. How many cakes will Laura Hall have to sell if she wants to earn $156,000 in operating income each month? cakes