Question 6
Facts: The graph refers to a plane's flight from one location to another. The vertical axis represents the distance, in kilometers, between the plane and its destination. The horizontal axis represents the time, t minutes, since takeoff.
Of all of the 20-minute intervals beginning and ending at times labeled on the graph, the interval in which the plane traveled farthest toward its destination was the interval from:
○ from t=20 to t=40
○ from t=60 to at t=80
○ from t=180 to t=200
○ from t=240 to at t=260