Doxycycline is one medicine that is used to help prevent Malaria. Terrence, who is traveling to Peru, takes 100 mg of doxycycline at 8:00 am. Six hours later there are approximately 79 mg of the medicine in his
system. Assume that doxycycline decays exponentially in a pattern that can be modeled by
d(t) = der where t is the number of hours since 8:00 am.
Write a function rule in the form d(t) = de" that can be used to determine the amount of doxycycline in
Terrence's system at any number of hours after he takes the medicine. Assume that he does not take another
dose of the medicine. Your answer should look like d(t) =