You are organizing your high school's sports banquet. The banquet hall rental is $250. In addition to this one-time charge, the meal will cost $7 per plate. Let x = the number of people who attend. Part a: Write an equation that represents the total cost C. Part b: Write an equation that represents the average cost A per person. Part c: Use the graph of the model shown below to estimate the number of people who must attend before the average cost drops to $15 per meal. Part d: Describe what happens to the average cost as the number of people who attend increases. AA 100+ 90 80 70 60 50 40 30 20 10 5 10 15 20 25 30 35 40 45 50 For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). AV T