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ZX-1A5D2DE6622023年12月A卷 · 第 20 题
2023年12月A卷 · 原库模块 2 · Q20 原库参考解析
The cost of renting a power washer is $44 for the first day and $22 for each additional day. Which of the following functions gives the cost C(d) , in dollars, of renting the power washer for d days, where d is a positive integer?
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解题思路
容易忽略的一步
