Sherry uses a computer to graph her workouts. The function c(h) = 750 + 300h approximates the calories she burns in one week of exercise, where h is the total number of hours she exercises Monday through Friday and 750 is the number of calories she burns during her weekend workouts.

a) Describe the meaning of the number 300 in the equation

b) Sherry will not be able to exercise on Saturdays for a while. She adjusts the number 750 to 375. How will this affect the graph of c(h)?

c) Sherry decides to intensify her Monday through Friday workouts. She will burn an additional 100 calories per hour. How does this change the equation? Describe the effect on the graph.