Answer:
10 miles/hr East
Explanation:
The car travels 5 miles East and then reverses direction. It then travels 7 miles in the reverse direction, arrive at the point it started, and going 2 miles further West of the start point. The time elapsed for this trip was 0.2 hours.
The net change in position is 2 miles East, in 0.2 hours. The average velocity is thus (2 miles E)/(0.2 hr) = 10 miles/hr East