An animal that dives into a pool of water is at a depth of x, in feet, after t seconds, where . At what depth, in feet, is the animal 0.5 seconds after it reaches its greatest depth?
An animal that dives into a pool of water is at a depth of x, in feet, after t seconds, where . At what depth, in feet, is the animal 0.5 seconds after it reaches its greatest depth?