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ZX-976775F6C22026年9月国际A卷 · 第 17 题
2026年9月国际A卷 · 原库模块 1 · Q17 参考答案
For a certain isotope, at the end of every 29-year period, the mass of a sample of the isotope has decayed to half its mass at the beginning of the 29-year period. The function \( s(t)=264(0.5)^{\frac{t}{29}} \) gives the approximate mass of this isotope, in grams, that remains t years after a 264-gram sample starts to decay. Which statement is the best interpretation of \( s(3·29)=33 \) in this context?
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