SOLUTION: A doctor prescribes 150 milligrams of a therapeutic drug that decays by about 20% each hour. Write an exponential model representing the amount A in milligrams of the drug remainin

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Question 1153052: A doctor prescribes 150 milligrams of a therapeutic drug that decays by about 20% each hour. Write an exponential model representing the amount A in milligrams of the drug remaining in the patient's system after t hours.
A(t) =


Use the formula to find the amount of the drug that would remain in the patient's system after 3 hours. Round to the nearest milligram.
mg
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

This would be
A%28t%29+=150%2A%280.8%29%5Et
after t=3 hours, it would be
A%283%29+=150%2A%280.8%29%5E3=76.8mg rounded to 77mg