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OpenStudy (anonymous):
Ethan uses the function f(x) = 2x2 + 2x + 4 to track the temperature of a substance over 8 hours. You know that f(3) = 28 meaning that the temperature of the substance is 28°C when you plug in a 3 for x. What is the domain of Ethan’s function?
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OpenStudy (rajee_sam):
domain is the x value which is the number of hours which is from 0 hours to 8 hours
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