Can someone check my work if it’s correct you

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

If a is a nonzero real number then the reciprocal of a is

1. how do you convert the repeating, nonterminating decimal 0. to a fraction? explain the process as you solve the problem.