Final answer:
A plane travels 13 miles in 1 minute at a speed of 780 mph.
Step-by-step explanation:
To determine how far a plane travels in 1 minute at a speed of 780 mph, we need to convert the speed from miles per hour to miles per minute. Since there are 60 minutes in an hour, we can divide 780 by 60 to get the speed in miles per minute, which is 13 miles per minute. Therefore, the plane travels 13 miles in 1 minute at a speed of 780 mph.