What is x^2 + 16
A) (x + 4)(x + 4)
B) (x - 4)(x - 4)
C) (x + 4)(x - 4)
D) cannot be factored

Find the sum of the first 8 terms of the following sequence. round to the nearest hundredth if necessary.

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

Is this a polynomial function? i need to know asap