Final answer:
The plane's average change in attitude per minute is 4488 feet.
Step-by-step explanation:
The average change in altitude per minute can be found by dividing the change in altitude by the time taken. In this case, the pilot descended 0.34 miles in 0.4 minutes.
To convert miles to feet, we multiply 0.34 by 5280 (since there are 5280 feet in a mile), which gives us 1795.2 feet. Dividing this by 0.4 minutes, we get 4488 feet per minute.