What is the missing side-

For the function, f(x) = -5x 2, find f(-4).

Given a(-12,5) and b(12,29) find the point that divides the line segment ab three-eighths of the way from a to b

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