← 比・比例・速率与单位换算 · 题库挑战

ONE QUESTION, ONE STEP

ZX-9B275B2B65

2025年6月国际B卷 · 第 17 题

2025年6月国际B卷 · 原库模块 2 · Q17 原库参考解析

One gallon of sealant costs $13 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?
选择答案