A theatre owner is trying to decide on a ticket price for his next play. The higher the price, the fewer the number of people who will buy tickets. He creates a quadratic function f (x) to estimate his total revenue, in dollars, if he charges x dollars per ticket. Then, he creates a table of values. x f (x) 00 1400 10 30 1800 40 800 Which of the following is the graph corresponding to the table of values?