Answer: Approximately 461.76 miles per hour
Explanation:
To calculate the plane's average speed in miles per hour, we can divide the distance of 7,850 miles by the time of 17 hours:
Average speed = distance ÷ time
Average speed = 7,850 miles ÷ 17 hours
Average speed ≈ 461.76 miles per hour
Therefore, the plane's average speed is approximately 461.76 miles per hour.
Hope this helps!