A dolphin jumping out of the water follows a path described by

Question

h = − (x2 − 10x + 16), where h is the vertical height, in metres, and x metres is the horizontal distance travelled.

a) How far horizontally does the dolphin travel out of the water?

Answer 1

h(x) = 0 when x = 2 or 8
so the dolphin is in the air for 6 meters