Select the correct answer.

The population of a community, [tex]$p(x)$[/tex], is modeled by this exponential function, where [tex]$x$[/tex] represents the number of years since the population started being recorded.

[tex]p(x)=2,400(1.025)^x[/tex]

What is the approximate population 3 years after the population started being recorded?

A. 2,460 people
B. 14,887 people
C. 7,380 people
D. 2,584 people



Answer :

To determine the population of the community 3 years after the population started being recorded, we begin with the exponential function given:
[tex]\[ p(x) = 2,400 (1.025)^x \][/tex]
Here, [tex]\(x\)[/tex] represents the number of years since the population started being recorded. We are tasked with finding the population for [tex]\(x = 3\)[/tex].

Substitute 3 into the function:
[tex]\[ p(3) = 2,400 \times (1.025)^3 \][/tex]

To proceed, let's break it down step by step.

1. Identify the initial population, growth rate, and years:
- Initial population, [tex]\(p_0\)[/tex]: 2,400 people
- Growth rate: 1.025
- Number of years, [tex]\(x\)[/tex]: 3

2. Compute the exponentiation:
- First, calculate [tex]\((1.025)^3\)[/tex]. When calculated, this is approximately [tex]\(1.0776\)[/tex].

3. Multiply by the initial population:
- Multiply the initial population by the result from the exponentiation step:
[tex]\[ p(3) \approx 2,400 \times 1.0776 \approx 2,584.5375 \][/tex]

4. Round to the nearest whole number if necessary:
- The approximate population is around 2,584 people.

Therefore, the approximate population 3 years after the population started being recorded is:

D. 2,584 people