Example 2: A volleyball is served into the air at 30 ft/sec from a height of 4 ft. The quadratic equation h = -16t² + 30t + 4 represents the height in feet of the ball over time in seconds. The graph illustrates the ball's trajectory.
A graph showing a quadratic equation representing the height of a volleyball over time, with the equation h = -16t² + 30t + 4 and the quadratic formula displayed above.
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