A movie theater has been charging $10.00 per person and selling about 500 tickets on a typical weeknight. After surveying their customers, the Ever management estimates that for every 50 cents that they lower the price, the number of moviegoers will increase by 50 per night. Find the demfunction. (Let x represent the number of tickets sold and p represent the price.) Calculate the consumer surplus when the tickets are priced at $9.00