There is a blizzard, and Matt notices that the snow is falling at a constant rate. Two hours after the beginning of the snowstorm, there is a total of 9 inches of snow. Five hours after the beginning of the snowstorm, there is a total of 15 inches of snow.
5a. How much snow falls each hour?
5b. How much snow was on the ground before the blizzard started?
5c. Write an equation that models the snowfall’s linear function.