Answer:
603
Explanation:
The rate of change is found by
rate of change = f(b) -f(a)
------------
b-a
We need to find the rate of change for the interval 7,9 and 4,6
We know b= 9 and a = 7
f(9) -f(7)
------------
9-7
3878-1852
----------------
9-7
2026
-------
2
1013
We know b= 6 and a = 4
f(6) -f(4)
------------
6-4
1178-358
---------------
6-4
820
------
2
410
It asks how much greater, that means subtraction
1013-410
603