If 6 also had the -2 exponent answer would be D if not then A
The answer to the question is D.
3,2 was your first point and it dropped to -5,0.
Here, to find the average rate of change, you would simply divide 270 by 63. And when that is done, you would get a long decimal. 4.285714285714286
And since you obviously can't put in such a long decimal as your answer, you would round it instead. Once rounded, you would end up with 4.29 (because the number after 8 is five, which rounds up, which would turn the 8 to 9.)
The answer to this question is b