It has been a fun weekend at the beach! After throwing away the garbage, you get on the highway, which originates right by your rental house, and head north toward home with the stereo rocking out. You start driving at 9:07, but a little over half an hour later, you realize the rental house keys are still in your pocket, which would entail a hefty fine. With a sigh, at 9:45 you take the next exit at the 41-mile marker, and get on the road heading back toward the beach with the cruise control at 72 mph. You quickly drop off the keys and raise your speed to 75 mph to make up for lost time. Rather tired, you finally reach the exit for home at 12:55. Determine your average speed and average velocity for the entire trip