How do I find final distance and final speed

A student's motion is captured using a motion detector and displayed on the graph shown. Use the graph to answer the following questions. Right is defined as positive. Answers have a 5% tolerance to allow for estimation. 6 Describe the direction of travel: W Right time (S) Describe the motion: velocity (m/s) 0 8 12 16 20 Decreasing speed 4 24 -3 What is the distance traveled? unit -6 What is the final speed? unit 9