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ZX-BDC5C112E62025年3月美国A卷 · 第 7 题
2025年3月美国A卷 · 原库模块 2 · Q7 原库参考解析
A sample of a certain isotope takes 29 years to decay to half its original mass. The function \( s(t)=128(0.5)^{\frac{t}{29}} \) gives the approximate mass of this isotope, in grams, that remains t years after a 128-gram sample starts to decay. Which statement is the best interpretation of \( s\left(58\right)=32 \) in this context?
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