During a snowstorm, Grayson tracked the amount of snow on the
ground. When the storm began, there was no snow on the ground.
Snow fell at a constant rate of 2 inches per hour until 4 inches had
fallen. The storm then stopped for 7 hours and then started again at a
constant rate of 3 inches per hour for the next 5 hours. As soon as the
storm stopped again, the sun came out and melted the snow for the
next 4 hours at a constant rate of 2 inches per hour. Make a graph
showing the inches of snow on the ground over time using the data
that Grayson collected.