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ZX-FAB258F2F2Linear functions · 第 2 题
Linear functions · 原库模块 1 · Q2 原库参考解析
An economist modeled the demand Q for a certain product as a linear function of the selling price P. The demand was 20,000 units when the selling price was $40 per unit, and the demand was 15,000 units when the selling price was $60 per unit. Based on the model, what is the demand, in units, when the selling price is $55 per unit?
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