Which undefined terms are needed to define parallel lines?

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

Which equation can be used to determine the reference angle, r, if 0=7 pi/12?

Me because i don't understand how to do it.: )