A bakery uses the equation y = 0.8x – 150 to model its total revenue, y, when x loaves of bread are sold. What does the slope of the model represent in the context of this problem? A. The number of loaves of bread sold must be 80 to maximize revenue. B. The store loses $150 if no loaves of bread are sold. C. The cost of one loaf of bread is $0.80. D. The total revenue will be $150.