Question
A stone is thrown vertically upward, and the height $x$ ft reached by the stone in $t$ seconds is given by $x = 80t - 16t^2$. The stone reaches the maximum height in
A stone is thrown vertically upward, and the height $x$ ft reached by the stone in $t$ seconds is given by $x = 80t - 16t^2$. The stone reaches the maximum height in