Question: The formula D = 5e -0.4h can be used to find the number of milligrams D of a certain drug that is in a patients

The formula D = 5e^-0.4hcan be used to find the number of milligrams D of a certain drug that is in a patient’s bloodstream h hours after the drug was administered.When the number of milligrams reaches 2, the drug is to be administered again. What is the time between injections?

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