A study was done to determine a new car's stopping distance when it was traveling at different speeds. The study was done on a dry road with good surface conditions. The results are shown below, along with the graph of a quadratic function that models the data.
Refer to the image showing the Vehicle Stopping Distance graph.
According to the model, what is the approximate difference in stopping distance, in feet, when the vehicle's speed increases from 30 miles per hour to 50 miles per hour?
70
100
110
150
