College

The deer population of a certain area is modeled by the formula:

[tex] P = 578 e^{0.045t} [/tex]

where [tex] t [/tex] is measured in years. In approximately how many years will the deer population reach 3000?

A. 36.6 years
B. 35.8 years
C. 34.7 years
D. 37.4 years

Answer :

To solve this problem, we need to find out how many years it will take for the deer population to reach 3000, using the growth model formula:

[tex]\[ P = 578 \times e^{0.045t} \][/tex]

where [tex]\( P \)[/tex] represents the population, and [tex]\( t \)[/tex] is the time in years.

1. Set up the equation with the target population:

[tex]\( 3000 = 578 \times e^{0.045t} \)[/tex]

2. Isolate the exponential part:

Divide both sides by 578 to simplify the equation:

[tex]\( e^{0.045t} = \frac{3000}{578} \)[/tex]

3. Convert to a logarithmic equation:

Use the natural logarithm to solve for [tex]\( t \)[/tex]:

[tex]\( \ln(e^{0.045t}) = \ln\left(\frac{3000}{578}\right) \)[/tex]

This simplifies to:

[tex]\( 0.045t = \ln\left(\frac{3000}{578}\right) \)[/tex]

4. Solve for [tex]\( t \)[/tex]:

Divide by 0.045 to find [tex]\( t \)[/tex]:

[tex]\( t = \frac{\ln\left(\frac{3000}{578}\right)}{0.045} \)[/tex]

5. Calculate [tex]\( t \)[/tex]:

Performing the above calculation will give you:

[tex]\( t \approx 36.6 \)[/tex]

This means it will take approximately 36.6 years for the deer population to reach 3000. The correct answer is option (A) 36.6 years.

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