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5 votes
An epidemic has hit Clinton City. Its population is declining 22% every hour. In just 4 hours, there are only 35,542 people left in the city. What was the initial population in the city before the epidemic broke out?

User Jasondinh
by
7.0k points

2 Answers

4 votes

Answer:

The actual answer is 14,742 I got a 100% on my assignment using this answer.

Explanation:

User Ashish Rathore
by
6.8k points
3 votes

Answer: 85688

Explanation:

The exponential decay function is given by :-


y=Ae^(-rt),
where A is the initial amount , r is the rate of decay (in decimal) and t is the time period.

The according to the question we have :_


35542=Ae^(-0.22*4)\\\\\Rightarrow\ 35542=Ae^(-0.88)\\\\\Rightarrow\ 35542=A(0.41478291168)\\\\\Rightarrow\ A=(35542)/(0.41478291168)\\\\\Rightarrow\ A=85688.1973654\approx85688

Hence, the initial population in the city before the epidemic broke out= 85688

User Adrianm
by
6.6k points
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