What is the balloon's height after 3 seconds?

Question

A water balloon is thrown from an apartment window. The water balloon's height, h (in feet above the ground), after t seconds is modeled by h = −16t2 + 517. What is the balloon's height after 3 seconds?

A. 383 ft

B. 661 ft

C. 746 ft

D. 373 ft

Answer 1

Simply evaluate h(3) = -16(3)² + 517 = -16(9) + 517 = -144 + 517 = 373 ft above the ground