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Analyzing Functions in Context

Analyzing Functions in Context 1.3 - Solution

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Let and represent the length and the width of a rectangle, respectively. It is given that, for an A series paper, the length is times the width. We can express this algebraically as an equation. Recall that the formula for the area of a rectangle is Let's substitute for into this formula to express the area in terms of the width,
Thus, a paper in the A series with the width has the area