Tuesday
March 31, 2015

Homework Help: Pre Calculus

Posted by HanuMath25/11 on Sunday, November 25, 2012 at 5:42pm.

When doctors prescribe medicine at equally spaced time intervals, they are aware that the body metabolizes the drug gradually. After some period of time, only a certain percent of the original amount remains. After each dose, the amount of the drug in the body is equal to the amount of the given dose plus the amount remaining from the previous doses. The amount of the drug present in the body after nth doses is modelled by a geometric series where t1 is the prescribed dosage and r is the previous dose remaining in the body.
Suppose a person with an ear infection takes a 200-mg ampicillin tablet every 4 h. About 12% of the drug in the body at the start of a four-hour period is still present at the end of that period. What amount of ampicillin is in the body, to the nearest tenth of a milligram,
(a) after taking third tablet?
(b) after taking the sixth tablet?

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Pre-Calculus - At time t hours after taking the cough suppressant hydrocodone ...
PRE-CALC - A drug is eliminated from the body through urine. Suppose that for an...
Calculus II Help Please - Only question I can't do on the assignment In ...
Calculus (math) - Warfarin is a drug used as an anticoagulant. After ...
calculus - Hydrocodone bitartrate is used as a cough suppressant. After the drug...
hard math question - When a certain drug enters the blood stream, its potency ...
Calculus - A 0.3 ml dose of a drug is injected into a patient steadily for 0.35 ...
Calculus (need help with only d and e) - Codeine phosphate is a drug used as a ...
Pre Calc! - A drug is eliminated from the body through urine. Suppose that for a...
Pre Calc! - A drug is eliminated from the body through urine. Suppose that for a...

Members