Answer:
Each answer is multiplied by 3 to get the next one
If there are 42 cookies you need to take away the chocolate chip cookies first. The answer to that is 24. Then you divide 24 by 2 because there are two more types of cookies. This equals 12. So there are 12 peanut butter cookies. Then if you write his as an equation you come up with the answer is C.
X^2 + 8x + 16 is the answer
In order to find average rate of change over an interval, do the y2-y1/x2-x1. Solve y for x=9 and x= 4
y2 = -3(9-4)^2 + 3 = -72
y1 = -3(4-4)^2 + 3 = 3
Now, x2 matches with y2 and and x1 matches with y1 obviously...
-72 - 3/9 - 4 = -15
