7 A company produces and sells books. The weekly cost, in euros, for producing x books is € (0.1x² + 400). The weekly income from selling x books is € (-0.12x² + 30x). a Show that the weekly profit, P(x), can be written as P(x) = -0.22x² + 30x-400. b Plot a graph of this equation and hence sketch it on paper, showing the coordinates of the vertex and axes intercepts. c State what the x-intercepts represent in the context of the problem.

7 A company produces and sells books. The weekly cost, in euros, for producing x books is € (0.1x² + 400). The weekly income from selling x books is € (-0.12x² + 30x). a Show that the weekly profit, P(x), can be written as P(x) = -0.22x² + 30x-400. b Plot a graph of this equation and hence sketch it on paper, showing the coordinates of the vertex and axes intercepts. c State what the x-intercepts represent in the context of the problem.

Algebra and Trigonometry (MindTap Course List)

4th Edition

ISBN:9781305071742

Author:James Stewart, Lothar Redlin, Saleem Watson

Publisher:James Stewart, Lothar Redlin, Saleem Watson

Chapter1: Equations And Graphs

Section1.CT: Chapter Test

Problem 8CT

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