Helpp i got -4 am i correct?

The heaviest 16% of all men in weight weigh more than how many pounds ?

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

Find the roots of the polynomial function f(x) = x^3 + 2x^2 + x