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ZX-55A4F30AC62025年8月美国A卷 · 第 4 题
2025年8月美国A卷 · 原库模块 2 · Q4 原库参考解析
The percent increase in mass of a certain red kangaroo from 90 days old to 160 days old was 438%. If this red kangaroo's mass was k grams at 90 days old, which expression represents its mass, in grams, at 160 days old?
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