Answer:
75 feet per hour is the rate of change in altitude.
Step-by-step explanation:
A climber is on a hike. After 2 hours he is at an altitude of 400 feet.
After 6 hours, he is at an altitude of 400 feet.
We have to determine the average rate of change in altitude.
We know rate of change in altitude = [tex]\frac{\text{(Change in altitude)}}{\text{Change in time}}[/tex]
= [tex]\frac{700-400}{6-2}[/tex]
= [tex]\frac{300}{4}[/tex]
= 75 feet per hour
Therefore, 75 feet per hour is the rate of change in altitude.