Pi divided by 2 is <span>1.57079632679 so anything bigger than 0 and less than that number should be between.</span>
If you need to simplify the equation it would be:

+2r-2n+7
If not sorry..
Hope This Helps!
A suitable calculator shows the score of
46.0 separates the bottom 26% from the top 74%.
For every 7 votes for candidate a, there are 4 votes for candidate c
Point S is the answer
move -2.25 on the x axis and 2/3 on the y form the origin