x y Find the zeros Enter your answers as a comma separated list X Use a graphing calculator to graph the function Use the vertex and zeros to determine an appropriate window Be sure to label the maximum or minimum point y 2500 2000 1500 1000 500 y 500 1000 y maximum 20 40 60 80 100 120 140 20 40 60 80 100 120 140 X X 25 20 15 10 5 2 maximum 4 6 8 10 12 14 X y 5 10 15 20 25 2 4 6 8 10 12 14 minimum X