Question

Time
(in minutes)
x 0 10 20 30 40
Car 1
(in km)
y 40 30 20 10 0
Car 2
(in km)
y 40 32.68292 26.70432 21.81936 17.828


Part A: What does the x-intercept of the function for car 1 represent? (2 points)

Part B: What does the y-intercept of the function for car 2 represent? (2 points)

Part C: What is the domain of the functions for car 1 and car 2? (2 points)

Part D: What is the average rate of change from x = 10 to x = 30 for the function representing the motion for car 2? What does the value of this average rate of change represent? (4 points)