Asked by Aria

During an epidemic, the number of people who have never had the disease and who are not immune (they are susceptible) decreases exponentially according to the function where t is time in days.
f(t)=15,000e^-.05t
Determine how long it will take for the initial number of people susceptible to decrease to half the amount

Answers

Answered by Steve
you want t such that

e^-.05t = 0.5
-.05t = ln(0.5)
t = ln(0.5)/(-.05) = 13.86
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