An arrow shot into the air is 160t-16t^2 feet above the ground t seconds after its released. During what period of time is the arrow above 384 feet?

Please provide breakdown of problem.

Prism m and pyramid n have the same base area and the same height. cylinder p and prism q have the same height and the same base perimeter. cone z has the same base area as cylinder y, but its height is three times the height of cylinder y. the figures and have the same volume.