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2025年8月国际B卷(易) · 第 15 题

2025年8月国际B卷(易) · 原库模块 1 · Q15 原库参考解析

An object is launched from a height of 139 feet above the ground. A quadratic function \( f \) models the height above the ground, in feet, of the object \( t \) seconds after it is launched. According to the model, 2 seconds after the object is launched, it reaches a maximum height of 203 feet above the ground. Which equation defines \( f \)?
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