Chapter9: Quadratic Equations And Functions
Section9.4: Solve Quadratic Equations In Quadratic Form
Problem 166E: In the following exercises, solve. 166. (5y1)2+3(5y1)28=0
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Suppose that the manufacturer of a gas clothes dryer has found that, when the unit price is p dollars, the revenue R (in dollars) is
(a) At what prices p is revenue zero? (b) For what range of prices will revenue exceed $800,000?
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