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Back to 9.6 Graph Quadratic Functions Using Properties

9.6 Exercise 89

Avg difficulty 2.5

Solve. Round answers to the nearest tenth.

A computer store owner estimates that by charging x dollars each for a certain computer, he can sell 40 − x computers each week. The quadratic function R(x) = −x2 +40x is used to find the revenue, R, received when the selling price of a computer is x, Find the selling price that will give him the maximum revenue, and then find the amount of the maximum revenue.

OpenStax Intermediate Algebra 2e, 9.6 Graph Quadratic Functions Using Properties, exercise 89

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Adapted from Intermediate Algebra 2e © 2020 Rice University. Licensed under CC BY 4.0. Source: Intermediate Algebra 2e. Imported at revision 77a933c.