Question

An airplane begins its descent. After 4 minutes, it is 22,000

feet above the ground. After 7 minutes, it is 16,000 feet above
the ground. What is the airplane's rate of change?

Answer 1

This is so hard
Good luck

Answer 2

2,000 feet/minute

Explanation:

After four minutes the plane has descended to 22,000 feet, and after seven minutes it has descended to 16,000 feet, so the plane lost 6,000 feet of altitude in three minutes. Assuming it lowers at a constant rate of change, the rate of change of the airplane would be
`(6000)/(3)` or 2,000 feet/minute.