7th grade algebra
posted by Canyon .
Cliff diver jump from a height of 85 to 115 feet above the water. After t seconds the diver has fallen 16tto the 2nd power feet.
does the diver jumping from 85 feet reach the surface of the water within 2 seconds why or why not.

85=16*t^2
t^2=85/16
t= sqrt (85/16) You do the math. 
85

67 feet