The height of a ball when it is thrown off a cliff can be represented by the equation h=45-7t-6t^2, where t is time in seconds. In how many seconds will the ball reach a height of 25 feet?
h(t) = 25 ft
25 = 45-7t-6t^2
0 = 20 - 7t - 6t^2 Use quadratic formula to find t = 1.33 sec