*brainliest if you show work!* Jason jumped off of a cliff into the ocean in Acapulco while vacationing with some friends. His height as a function of time could be modeled by the function h(t) = -16t^2 + 16t+ 480, where t is the time in seconds and h is the height in feet.

a) How high was the cliff from which he jumped?

b) Jason hit the water after how many seconds?