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2025年10月美国A卷(数易) · 第 1 题

2025年10月美国A卷(数易) · 原库模块 1 · Q1 原库参考解析

A quadratic function models the height, in feet, of an object above the ground in terms of the time, in seconds, after the object was launched. The model estimates that the object was launched from an initial height of 0.00 feet above the ground and was at a maximum height of 207.36 feet above the ground 3.6 seconds after it was launched. The model also estimates that the object was at a height of 184.32 feet above the ground x seconds after it was launched. What is a possible value of x?

支持整数、小数和分数;循环小数建议填写分数,不需要写单位。