Question 185507
The half-life of aspirin in a person's bloodstream is about 15 minutes. A person takes a 325 milligram Bayer Aspirin. 
a. Find an equation to represent this situation. Let f(t) be the amount of aspirin (in milligrams) in the bloodstream if t is the number of hours since it entered the bloodstream.
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f(t) = f(0)(1/2)^(t/(1/4))
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b. When will there be no aspirin left in the person’s bloodstream? (Show your algebra.)
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325(1/2)^(4t) = 0
(1/2)^(4t) = 0
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There is no solution as no power of (1/2) is equal to zero.
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c. What is the domain and range for this situation?
Domain : t >= 0
Range: 0 < f(t) <= 325
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Cheers,
Stan H.