25 points plus brainliest This is language art

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

Acredit card advertises an annual interest rate of 23%. what is the equivalent monthly interest rate?

Solve the given system of equations. 2y= -x+9 , 3x-6= -15