To find the speed of the motorcycle, we can calculate the unit rate (speed) by dividing the distance traveled by the time taken.
Jeff's motorcycle travels 500 miles in 8 hours.
Speed = Distance / Time = 500 miles / 8 hours = 62.5 miles per hour.
Now, comparing this speed to the speed limit of 65 miles per hour:
62.5 miles per hour (motorcycle's speed) is less than 65 miles per hour (speed limit).
Therefore, the motorcycle is going slower than the speed limit.