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ZX-B8F24138702025年8月国际A卷 · 第 18 题
2025年8月国际A卷 · 原库模块 2 · Q18 原库参考解析
The equation \( d=6t+210 \) gives the distance d, in feet, from a reference point on the surface of Mars to a Mars rover, where t is the number of minutes after the start of a period of observation. By how many feet does the Mars rover's distance from the reference point increase over a period of 20 minutes?
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