Math Problem Statement
Use a calculator with a nbsp y Superscript x nbsp key or a nbsp logical and nbsp key to solve the following. The exponential function f(x)equals566 left parenthesis 1.032 right parenthesis Superscript x models the population of a country, f(x), in millions, x years after 1973. Complete parts (a)minus(e). Question content area bottom Part 1 a. Substitute 0 for x and, without using a calculator, find the country's population in 1973. The country's population in 1973 was 566 million. Part 2 b. Substitute 22 for x and use your calculator to find the country's population, to the nearest million, in the year 1995 as modeled by this function. The country's population in 1995 was 1132 million. Part 3 c. Find the country's population, to the nearest million, in the year 2017 as predicted by this function. The country's population in 2017 will be enter your response here million.
Solution
To solve the problem and calculate the country's population based on the given exponential function, follow these steps:
Given Function:
where:
- corresponds to the year 1973,
- corresponds to the year 1995,
- corresponds to the year 2017 (since 2017 - 1973 = 44).
Step A: Population in 1973 ()
Substitute into the function: Since any number raised to the power of 0 equals 1:
Thus, the population in 1973 is 566 million (as given).
Step B: Population in 1995 ()
Substitute into the function: Using a calculator:
- Compute :
- Multiply:
Thus, the population in 1995 is approximately 1132 million.
Step C: Population in 2017 ()
Substitute into the function: Using a calculator:
- Compute :
- Multiply:
Thus, the population in 2017 is approximately 2006 million (to the nearest million).
Final Answers:
a. Population in 1973: 566 million
b. Population in 1995: 1132 million
c. Population in 2017: 2006 million
Do you want further explanation or a breakdown of these steps?
Here are 5 questions to explore further:
- How does an exponential growth model differ from linear growth?
- Why does the base of the exponential function, , indicate a growth rate of 3.2%?
- What are some limitations of using exponential models for long-term population predictions?
- How would the population change if the growth rate were higher or lower?
- Can this model be adjusted for population decline instead of growth?
Tip: When solving exponential equations, always double-check your power calculations to ensure accuracy.
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Math Problem Analysis
Mathematical Concepts
Exponential Growth
Algebra
Functions and Modeling
Formulas
Exponential function f(x) = a(b)^x
Theorems
Laws of Exponents
Suitable Grade Level
Grades 9-12
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