ONE QUESTION, ONE STEP
ZX-0FDBD354A32024年5月B卷练习 · 第 22 题
2024年5月B卷练习 · 原库模块 1 · Q22 原库参考解析
A computer repair specialist charges $160 for the first two hours of repair plus an hourly fee for each additional hour. The total cost for 4 hours of repair is $240. Which function f gives the total cost, in dollars, for x hours of repair; where x \( \ge \) 2?
参考答案：
解题思路
容易忽略的一步
