The Quicks are driving to their vacation home. After driving…

The Quicks are driving to their vacation home. After driving for 3.25 hours, they are 250 km from the vacation home. Then, after 4.75 hours of driving, they are 150 km from the vacation home. Approximately, how fast are the Quicks driving? hint: Calculate the “Slope” or “Rate of Change” in km/hour