During a snowstorm, Owen tracked the amount of snow on the ground. When
the storm began, there were 3 inches of snow on the ground. Snow fell at a
constant rate of 3 inches per
hour until another 9 inches had fallen. The
storm then stopped for 6 hours and then started again at a constant rate of 2
inches
per hour for the next 4 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 Owen collected.