While serving the ball at a beach volleyball game, a player tosses the ball up from a height of
4 feet at a velocity of 18 feet per second. After it starts to fall back down, the player jumps
up and hits the ball at a height of 7 feet.
To the nearest tenth of a second, how long is the ball in the air before the player hits it?
Hint: Use the formula h = -16t² + vt + s.