Answer
The car traveled a distance of approximately 150 feet.
Work Step by Step
The area under a velocity versus time graph is equal to the displacement. We can count the boxes under the graph to estimate the distance traveled by the car. Note that the area of each box represents $~~(20~ft/s)\times (1.0~s) = 20~feet$
There are approximately 7.5 squares under the velocity versus time graph:
$distance \approx (7.5)(20~feet) = 150~feet$
The car traveled a distance of approximately 150 feet.
