Practice associating the area under rate-of-change curves with net change.


A freight train leaves the station on a 10-hour trip. The graph below shows the train's velocity as a function of time.
How far does the train travel?
  • Your answer should be
  • an integer, like 6
  • an exact decimal, like 0, point, 75
  • a simplified proper fraction, like 3, slash, 5
  • a simplified improper fraction, like 7, slash, 4
  • a mixed number, like 1, space, 3, slash, 4