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ZX-9733FB2C2E2025年10月国际A卷 · 第 22 题
2025年10月国际A卷 · 原库模块 1 · Q22 原库参考解析
A computer program models the total mass of the population of a certain type of algae after the algae was placed in an environment where it has no natural predators. According to the model, the estimated total mass of this population of algae at the end of every 6-hour period is 129% greater than the estimated total mass of this population of algae at the end of the previous 6-hour period, and the estimated total mass of this population of algae is 613.90 grams after 18 hours. Which equation best represents this model, where A is the estimated total mass, in grams, of the population of algae after x hours, and \( x<50 \)?
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