Final answer:
The boat travels a distance of 9 meters.
Step-by-step explanation:
To find the distance traveled by the boat, we can use the formula: d = (vi + vf) / 2 * t
Where d is the distance, vi is the initial velocity, vf is the final velocity, and t is the time. Plugging in the given values:
d = (12 m/s + 6 m/s) / 2 * 8 s
d = 9 m
Therefore, the boat travels a distance of 9 meters.