a. How much Valium remains in the person's bloodstream 12 hours after taking a 10-mg dose? Round to 1 decimal place. mg b. How long will it take 10 mg to decay to 5 mg in a person's bloodstream? Round to 2 decimal places. hours c. At what rate is the amount of Valium in a person's bloodstream decaying 4 hours after a 10-mg dose is taken. Round to 3 decimal places. A' (4) = mg/hr

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