Approximate the Number Using a Calculator $\mathrm { D } ( \mathrm { h } ) = 8 \mathrm { e } ^ { - 0.4 \mathrm {~h} }$

question 36

Multiple Choice

Approximate the number using a calculator. Round your answer to three decimal places.
-The function $\mathrm { D } ( \mathrm { h } ) = 8 \mathrm { e } ^ { - 0.4 \mathrm {~h} }$ can be used to determine the milligrams $\mathrm { D }$ of a certain drug in a patient's bloodstream h hours after the drug has been given. How many milligrams (to two decimals) will be present after 7 hours?

• A) \(0.49 \mathrm { mg }\)
• B) \(131.56 \mathrm { mg }\)
• C) \(5.81 \mathrm { mg }\)
• D) \(0.29 \mathrm { mg }\)

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