ONE QUESTION, ONE STEP
ZX-1C2A8D8B9CLinear functions · 第 1 题
Linear functions · 原库模块 1 · Q1 原库参考解析
A window repair specialist charges $220 for the first two hours of repair plus an hourly fee for each additional hour. The total cost for 5 hours of repair is $400. Which function f gives the total cost, in dollars, for x hours of repair, where x \( \ge \) 2?
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