A mold grows at a rate that is proportional to the amount present. Initially there is 5 oz of this mold, and 10 hours later there is 8 oz. When is there 15 oz of the mold? (Answer is in hours.)

College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter2: Functions And Graphs
Section2.6: Proportion And Variation
Problem 17E: Find the constant of proportionality. y is directly proportional to x. If x=30, then y=15.
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A mold grows at a rate that is proportional to the amount present. Initially there is 5 oz of this mold, and 10 hours later there is 8 oz. When is there 15 oz of the mold?
(Answer is in hours.)
Transcribed Image Text:A mold grows at a rate that is proportional to the amount present. Initially there is 5 oz of this mold, and 10 hours later there is 8 oz. When is there 15 oz of the mold? (Answer is in hours.)
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