I answered C for that question.
I guess 2.5 because of it -2.5 from the beginning
56 divided by 7 = 8
8 multiplied by 6
=48
Based on the information given the average speed for his trip is 64 miles.
<h3>
Average speed:</h3>
Using this formula
d=rt
r=d/t
Where:
r=rate=?
d=distance=512 miles
t=time=8 hours
Let plug in the formula
r=512/8
r=64 miles
Inconclusion the average speed for his trip is 64 miles.
Learn more about average speed here:brainly.com/question/6504879