The numbers aren't accurate, they dont add up
63/84 divided by 21/21
=3/4
or
63 divided by 84=0.75 which is the same thing as 3/4
Answer:
answer is B 38-18
Step-by-step explanation:
38 + (-18)
38-18
Step-by-step explanation:








First of all, a positive average rate of change means that the function is increasing, so the answer can only be A->B or B->C.
The average rate of change is defined as

i.e. as the ratio between the vertical and horizontal gain.
In order to go from point A to point B, you gain 1 unit horizontally and 5 units vertically. So, the average rate of change is 5/1=5.
In order to go from point B to point C, you gain 1 unit horizontally and 3 units vertically. So, the average rate of change is 3/1=3.