Graph Quadratic Functions Using Properties · Exercise 56
Solve. Round answers to the nearest tenth.
A cell phone company estimates that by charging x dollars each for a certain cell phone, they can sell 8 − x cell phones per day. Use the quadratic function R(x) = −x^2 +8x to find the revenue received per day when the selling price of a cell phone is x. Find the selling price that will give them the maximum revenue per day, and then find the amount of the maximum revenue.
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OpenStax, Intermediate Algebra 2e · §9.6 Graph Quadratic Functions Using Properties · Exercise 56
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