The formula $D = 10e^{-0.5h}$ can 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 4, the drug is to be administered again. What is the time between injections? The time between injections is $oxed{}$ hour(s). (Round to two decimal places as needed.)
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Step 1: Determine the time of the first injection and the time of the second injection. Show more…
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