Posted by **Lindsey** on Monday, November 21, 2011 at 12:45pm.

2 hours after a given drug has been administered there is only 75% of it left in the body. a. What percentage of it leaves the body every hour (find the hourly decay rate)?

b. What is the continuous decay rate?

c. How long until 50% has left the body?

d. How long until 99% of it has left the body?

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