Answer:
Mel was descending at a faster average rate and the rate of change of Mel is -5 feet/ second.
Step-by-step explanation:
It is function passes through two points, then the average rate of change is
Let x be the time in seconds and y be the height in feet.
After 2 seconds, Mel was 50 feet in the air, and after 5 seconds, she was 35 feet in the air. It means the function have two ordered pairs (2,50) and (5,35).
The average rate of change of Mel is
It means Mel was descending at a rate of 5 feet per second.
After 1 second, Victor was 60 feet in the air, and after 4 seconds, he was 50 feet in the air. It means the function have two ordered pairs (1,60) and (4,50).
The average rate of change of Victor is
It means Victor was descending at a rate of 10/3 feet per second.
5>3.33..
Therefore, Mel was descending at a faster average rate and the rate of change of Mel is -5 feet/ second.