College

The population of a small town can be modeled by the function [tex]p(t) = 3125(1.03)^t[/tex], where [tex]t[/tex] is the number of years since 2000.

What is the meaning of 3125 in the function?

A. The amount the population increases each year
B. The population in the year 2000
C. The population after 3 years
D. The maximum population of the town

Answer :

We are given the population model

[tex]$$
p(t) = 3125(1.03)^t,
$$[/tex]

where [tex]$t$[/tex] is the number of years since 2000.

1. To find the meaning of the number [tex]$3125$[/tex], we substitute [tex]$t = 0$[/tex] (the year 2000) into the function:

[tex]$$
p(0)=3125(1.03)^0.
$$[/tex]

2. Since any number raised to the power [tex]$0$[/tex] is [tex]$1$[/tex], we have

[tex]$$
(1.03)^0 = 1.
$$[/tex]

Thus,

[tex]$$
p(0) = 3125 \times 1 = 3125.
$$[/tex]

3. This value, [tex]$3125$[/tex], represents the population of the town in the year 2000.

Therefore, the number [tex]$3125$[/tex] is the population in the year 2000, which corresponds to option B.