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2023年12月D卷 · 第 7 题

2023年12月D卷 · 原库模块 1 · Q7 原库参考解析

A student council group is selling car stickers for a fundraiser. They use the function p(x)= 5x-220 to determine their profit p(x), in dollars, for selling x car stickers. In order to earn a profit of $400, how many car stickers must they sell?

支持整数、小数和分数;循环小数建议填写分数,不需要写单位。