8) (10 points) Marginal Profit: When the admission price for a baseball game was $30 per ticket, 36,000 tickets were sold. When the price was raised to $35, only 32,000 tickets were sold. Assume that the demand function is linear and that the marginal and fixed costs for the ballpark owners are $5 and $700,000, respectively. tickets price (x p) o a. Find the demand equation p = mx + b. b. Find the revenue R, total cost C, and profit P as a function of x, the number of tickets sold. c. Find the marginal profit P when 18,000 tickets are sold