I was given this assignment and have no idea how to even start! Do I need to make a stat graph? Which columns of information do I use? Will the equation be in ax^2 +bx+c form? And how can I use it?

Can someone find the equation? Is it:2.1190x^2+6.6429x+11.1667?

Thank you so much in advance!

http://i55.tinypic.com/fwrac8.jpg