Can you help me with this

In the diagram of circle a what is m

The table below shows the height of a ball  x  seconds after being kicked.  what values, rounded to the nearest whole number, complete the quadratic regression equation that models the data? f(x)  =  x2  +  x  +  0based on the regression equation and rounded to the nearest whole number, what is the estimated height after 0.25 seconds?   feet

What is the solution to the equation? k/6.4=8.7 2.3 5.568 15.1 55.68