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2025年12月国际B卷 · 第 18 题

2025年12月国际B卷 · 原库模块 2 · Q18 原库参考解析

The quadratic function g models the depth, in meters, below the surface of the water of a Weddell seal t minutes after the seal entered the water during a dive. The function estimates that the seal reached its maximum depth of 396.8 meters 8 minutes after it entered the water and then reached the surface of the water 16 minutes after it entered the water. Based on the function, what was the estimated depth, to the nearest meter, of the seal 11 minutes after it entered the water?

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。