To model the diver's jump after the diving board is extended by 0.5 feet, we need to adjust the function \( h(x) = -(x - 2)^2 + 9 \).
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Understand the original function: The original function indicates that the diver reaches a maximum height of 9 feet at \( x = 2 \) seconds. The vertex form of the function shows that the height above the water depends on time.
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Change in height due to extended board: Extending the diving board by 0.5 feet means that the maximum height is increased by 0.5 feet. Therefore, the new maximum height will be \( 9 + 0.5 = 9.5 \) feet.
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Rewriting the function with the new maximum height: Since the extension does not affect the time at which the diver reaches the maximum height (which remains at \( x = 2 \)), we only need to update the height in the equation: \[ h(x) = -(x - 2)^2 + 9.5. \]
Thus, the new function that models the diver's jump after the diving board has been extended by 0.5 feet is: \[ h(x) = -(x - 2)^2 + 9.5. \]