Help. ​

I used this calculator :

https://www.easycalculation.com/statistics/quadratic-regression.php

33 x^2 -24x +635

When  x  =  8

33(8)^2 - 24(8) + 635  =  2555

4. 

 -0.507x^2 +14.908x -36.141

The second function seems closest