Tickets and Merchandise. Consider a baseball team that has a ticket price of ?$45 and sells 30,000 tickets at this price. The slope of the demand curve is -?$0.002. The typical fan purchases ?$30 worth of merchandise that costs the owner ?$5 to provide. a. The marginal revenue from ticket sales is ?$. ?(Enter your response rounded to two decimal places and include a minus sign if? necessary.) b. Including both ticket sales and? merchandise, the marginal fan contributes an additional ?$ to the? team's total revenue. ?(Enter your responses rounded to two decimal? places.)