AnswersAlgebra II Honors AModeling with Quadratic Equations

Modeling with Quadratic Equations Answers

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A sporting goods store uses quadratic equations to monitor the daily cost and profit for various items it sells. The store’s daily profit, y, when soccer balls are sold at x dollars each, is modeled by . Why is there an interval over which the graph decreases?

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A
If the store sells more soccer balls, they can decrease the price.
B
If the soccer balls are returned for a refund, the store will lose money.
C
If the soccer balls are too expensive, fewer will be sold, reducing profit.
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Which did you include in your response?

A
The vertex is the maximum of the graph.
B
The maximum daily profit from the sale of soccer balls is $236.67.
C
The maximum profit occurs when the store charges $8.33 per soccer ball.

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