HELP!! Jamaal bounces on a trampoline. His height, as a function of time, is modeled by y= -16x2(power of 2) + 20x + 4.


Which statement best describes the function?

A. The function is linear

B. The function in nonlinear

C. Not enough information is given to decide

D. The function is linear at some points and nonlinear at other points


Thank you in advance :)