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ZX-739D3E98802026年6月国际D卷练习 · 第 13 题
2026年6月国际D卷练习 · 原库模块 2 · Q13 参考答案
An environmental scientist studies the decomposition of paper bags when the bags are placed in an environment with a certain type of bacteria. The exponential function \( f(x)=545(0.91)^x \) gives the estimated remaining mass, in grams, of the paper bags x days after they are placed in an environment with this bacteria, where \( 0\le x\le30 \). If this function is graphed in the xy-plane, where \( y=f(x) \), which statement is the best interpretation of the point (1, 495.95) on the graph?
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