APPLICATION The Yo-yo Warehouse uses the equation y = 85x2 + 552.5x to model the
Chapter 9, Problem 11(choose chapter or problem)
APPLICATION The Yo-yo Warehouse uses the equation y = 85x2 + 552.5x to model the relationship between income and price for one of its top-selling yo-yos. In this model, y represents income in dollars and x represents the selling price in dollars of one item. a. Graph this relationship on your calculator, and describe a meaningful domain and range for this situation. b. Describe a method for finding the vertex of the graph of this relationship. What is the vertex? c. What are the real-world meanings of the coordinates of the vertex? d. What is the real-world meaning of the two x-intercepts of the graph? e. Interpret the meaning of this model if x = 5.
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