The population of Bridgeville, PA, is 5,300 with a growth rate of 1.3% per year. Which expression could be used to estimate the population of Bridgeville t years from now?

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Answer 1 · 2016-12-16T12:20:34

$PA=5300(1+1.3)^t$

However, this equation does not take into account the death rate.

Let population be PA

Use the same equation they use to calculate compound interest

Principle sum is what you start with: $->P$

So we have: $->P(1+1.3/100)^t$

But $P=5300$ giving:

$PA=5300(1+1.3)^t$