Question

You sprain your ankle
and your doctor prescribes 325 milligrams of an
anti-infl ammatory drug every 8 hours for 10 days.
Sixty percent of the drug is removed from the
bloodstream every 8 hours.
how to write a recursive rule?

Answer 1

1st step

You will need some pen and paper

Answer 2

@Luigi0210 senpai

Answer 3

Well you start off at 325 mg, which can be \(a_{1}=325 \)

For the ten days, there will be 240 hours.

The second equation can be \(a_{2}=a_{1} -0.6(a_{1}) \)
The third might be something like \(a_{3} =a_{2}-0.6(a_{2}) \)
and so on till you reach 240 hrs, where \(a_{1} \) is 8 hrs, \(a_{2} \) is 16 hrs, etc..

Just my thoughts (:

Answer 4

Oh ok, thanks

Answer 5

Actually, the recursive rule is for the amount of the drug in the bloodstream after n doses.

Answer 6

Sorry I didn't mention that earlier.