+334 The equation $y = -16t^2 - 60t + 54$ describes the height (in feet) of a ball thrown downward at 60 feet per second from a height of 54 feet from the ground, where $t$ represents time, measured in seconds. In how many seconds will the ball hit the ground? Express your answer as a decimal rounded to the nearest hundredth.
+36915 Put y = 0 (this will be when the ball hits the ground) into the equation and then solve for 't'
0 = -16t2 -60t +54 Solve for 't'
(throw out any negative values found while using Quadratic Fromula or factoring)
