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Math Help - Medical Word Problem

  1. #1
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    Talking Medical Word Problem

    this is stumping several people I know , any thoughts ?

    12. The amount A (in milligrams) of digoxin, a drug taken by cardiac patients, remaining in the blood t hours after a patient takes a 2 mg dose is given by A = 2(10-.0078t).

    (a)How much digoxin remains in the blood of a patient 4 hours after taking a 2 mg dose?


    (b)Suppose a patient takes a 2 mg dose at 1:00 p. m. and another 2 mg dose at 5:00 p. m. How much digoxin remains in the patientís blood at 6:00 p. m.?
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  2. #2
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    Quote Originally Posted by AlgebraicallyChallenged View Post
    this is stumping several people I know , any thoughts ?

    12. The amount A (in milligrams) of digoxin, a drug taken by cardiac patients, remaining in the blood t hours after a patient takes a 2 mg dose is given by A = 2(10-.0078t).

    (a)How much digoxin remains in the blood of a patient 4 hours after taking a 2 mg dose?


    (b)Suppose a patient takes a 2 mg dose at 1:00 p. m. and another 2 mg dose at 5:00 p. m. How much digoxin remains in the patientís blood at 6:00 p. m.?
    For a, we just need to plug in 4 for t and solve the equation.

    For b, calculate how much digoxin is in the blood from the 1:00 p.m. does at 6:00 p.m., and then find the amount of digoxin in the blood from the 5:00 p.m. dose and add the two amounts together.
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