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An initial population of 700 quail increases at an annual rate of 30%.

Write an exponential function to model the quail population.


Sagot :

To model the population growth of the quail, we'll use an exponential function that incorporates the initial population, the growth rate, and the time in years.

### Step-by-Step Solution:

1. Define the Initial Population:
The initial population of the quail is [tex]\( P_0 = 700 \)[/tex].

2. Identify the Growth Rate:
The annual growth rate is 30%. In decimal form, this is [tex]\( r = 0.30 \)[/tex].

3. Determine the General Form of the Exponential Function:
An exponential growth function can be written as:
[tex]\[ P(t) = P_0 \times (1 + r)^t \][/tex]
where:
- [tex]\( P(t) \)[/tex] is the population at time [tex]\( t \)[/tex] years.
- [tex]\( P_0 \)[/tex] is the initial population.
- [tex]\( r \)[/tex] is the growth rate.
- [tex]\( t \)[/tex] is the time in years.

4. Substitute the Given Values:
Substitute [tex]\( P_0 = 700 \)[/tex] and [tex]\( r = 0.30 \)[/tex] into the general formula:
[tex]\[ P(t) = 700 \times (1 + 0.30)^t \][/tex]

5. Simplify the Expression:
Simplify the term inside the parentheses:
[tex]\[ P(t) = 700 \times 1.30^t \][/tex]

So, the exponential function to model the quail population can be written as:
[tex]\[ P(t) = 700 \times 1.30^t \][/tex]

This function [tex]\( P(t) = 700 \times 1.30^t \)[/tex] depicts how the population of quails grows exponentially over time, with 700 being the starting population and 1.30 representing the 30% annual increase.