2025年10月国际B卷 · 第 6 题

2025年10月国际B卷 · 原库模块 2 · Q6 原库参考解析

A wireless phone company pays customers for trading in old smartphones. The payment p, in dollars, is the original retail price of a smartphone minus $135 for each year since the smartphone was released. Which equation represents this situation for a smartphone with an original retail price of $750 when it was released t years ago, where t is a whole number and $ 1\le t\le4 $?

2025年10月国际B卷 · 第 6 题

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