← 线性建模・建立方程 · 题库挑战

ONE QUESTION, ONE STEP

ZX-F93AAEC6EF

Linear functions · 第 3 题

Linear functions · 原库模块 1 · Q3 原库参考解析

The cost of renting a backhoe for up to 10 days is $270 for the first day and $135 for each additional day. Which of the following equations gives the cost y, in dollars, of renting the backhoe for x days, where x is a positive integer and x \( \le \) 10?
选择答案