how long did it take jason to reach his maximum height

Question

-16t^2+16t+128

Answer 1

-16t²+16t+128,

128-16(t²-t),

128-16(t²-t+¼-¼), completing the square,

128-16(t-½)²+4,

132-16(t-½)².

If the given equation gives the height in terms of time t, the maximum height 132 is attained when t=½ because the squared term becomes zero.