For this case we must find the value of the variable "p" of the following equation:

We apply distributive property on the left side of the equation taking into account that
and
:

We add similar terms:

We subtract
from both sides of the equation:

We subtract 8 from both sides of the equation:

We divide by -6 on both sides of the equation:

Answer:

B because pie radius square = area of a circle
You can try to find a way to get the range from the highest score to the lowest score.
Add 7 and 2 you will get 9, therefore the length of the post is 9.