Lines AB and CD (if shown) are straight lines. Find x. Give reasons to justify your solutions. PLS HELP! WILL GIVE BRAINLIEST!!

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 is the focus of a parabola with equation y2=4x

What is the value of x? enter your answer in the box.