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ZX-418AFC5F05Linear functions · 第 13 题
Linear functions · 原库模块 1 · Q13 原库参考解析
An object hangs from a spring. The formula l =30+2w relates the length l , in centimeters, of the spring to the weight w, in newtons, of the object. Which of the following describes the meaning of the 2 in this context?
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