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ZX-67DA07BA49Bluebook试题9 · 第 6 题
Bluebook试题9 · 原库模块 1 · Q6 原库参考解析
A student council group is selling school posters for a fundraiser. They use the function \( p\left(x\right)=5x-220 \) to determine their profit \( p\left(x\right) \), in dollars, for selling x school posters. In order to earn a profit of $900, how many school posters must they sell?
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