Question
The function measures the amount of iron in Sarah’s bloodstream (in milligrams) where is measured in minutes since she ingested an iron supplement. Suppose .
Select each of the true statements from the following:
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Twenty-one minutes after ingesting the iron supplement, Sarah had 6.7 milligrams of iron in her bloodstream.
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On average, the amount of iron in Sarah’s bloodstream increased by 6.7 milligrams each minute over the first 21 minutes since she ingested the iron supplement is an interpretation of
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Twenty-one minutes after ingesting the iron supplement, the amount of iron in Sarah’s bloodstream was growing at a rate of 6.7 milligrams per minute.
Solution
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False. The amount of iron in Sarah’s bloodstream is given by the function . This statement would be the correct interpretation of
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True. The average rate of change of over the first 21 minutes (i.e., over the interval is
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True. This is the correct interpretation of