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2026年9月国际A卷 · 第 13 题

2026年9月国际A卷 · 原库模块 3 · Q13 参考答案

A jar is used to store marbles. The function \( f(x)=5x+270 \) gives the total mass, in grams, of the jar and the marbles inside, where x is the number of marbles in the jar. Which of the following is the best interpretation of \( f(0)=270 \) in this context?
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