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 = 20 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)

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A x-intercept is the time 60 minutes he has taken to travel to his destination.

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