⚠️PLEASE HELP ME⚠️ i also need these problems solved as well: 4.5(x-9)=-18 x=
1/2(n+4)=16. n=
please answer them all.

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