Problem

The population of a small town is modeled by the equation $P=1450 e^{6.5 t}$ where $t$ is measured in years. In approximately how many years will the town's population reach 20,000 ? (Round your answer to two decimal places.) $\mathrm{yr}$

Solution

Step 1 :We are given the population model \(P=1450 e^{6.5 t}\) and we are asked to find the time \(t\) when the population \(P\) will be 20,000.

Step 2 :We can solve this by setting \(P=20000\) and solving for \(t\).

Step 3 :This will involve taking the natural logarithm of both sides of the equation to isolate \(t\).

Step 4 :Substituting the given values into the equation, we get \(20000 = 1450 e^{6.5 t}\).

Step 5 :Solving for \(t\), we get \(t = 0.4037182641725397\).

Step 6 :Rounding to two decimal places, we get \(t = 0.40\).

Step 7 :Final Answer: The town's population will reach 20,000 in approximately \(\boxed{0.40}\) years.

From Solvely APP
Source: https://solvelyapp.com/problems/7545/

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