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OpenStudy (samirahdanyel):
The half life of a certain substance is about 4 hours. The graph shows the decay of a 50 gram sample of the substance that is measured every hour for 9 hours. Which function can be used to determine the approximate number of grams of the sample remaining after t hours? y = 25(0.15)x y = 25(0.85)x y = 50(0.15)x y = 50(0.85)x
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