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2026年6月国际D卷练习 · 第 22 题

2026年6月国际D卷练习 · 原库模块 2 · Q22 参考答案

A museum exhibit displays 69 artifacts on day 1. On each following day, 7 artifacts are added to the exhibit. The function \( f(x)=7(x-1)+69 \)represents this situation, where \( f(x) \) is the total number of artifacts exhibited at the end of day x. According to the function, what is the number of artifacts that have been added to the exhibit by the end of day x ?
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