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2025年6月美国B卷 · 第 15 题

2025年6月美国B卷 · 原库模块 2 · Q15 原库参考解析

One gallon of sealant costs $29 and will cover 300 square feet of a surface. A deck has a total surface area of d square feet. Which equation represents the cost c, in dollars, of the sealant needed to cover the deck twice?
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