An auditorium has seats for 3200 people. Tickets to attend a show at the auditorium currently cost $ 8.00 For each $1.00 increase to the ticket price, 100 fewer tickets will be sold This situation can be modeled by the equation y = -100X2 + 2400x + 25600, where x represents the increase in ticket price, in dollars, and y represents the revenue, in dollars, from ticket sales If this equation is graphed in the xy-plane, at what value of x is the maximum of the graph?