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:

f(x)=566(1.032)xf(x) = 566 \cdot (1.032)^x

where:

  • x=0x = 0 corresponds to the year 1973,
  • x=22x = 22 corresponds to the year 1995,
  • x=44x = 44 corresponds to the year 2017 (since 2017 - 1973 = 44).

Step A: Population in 1973 (x=0x = 0)

Substitute x=0x = 0 into the function: f(0)=566(1.032)0f(0) = 566 \cdot (1.032)^0 Since any number raised to the power of 0 equals 1: f(0)=5661=566 million.f(0) = 566 \cdot 1 = 566 \text{ million.}

Thus, the population in 1973 is 566 million (as given).


Step B: Population in 1995 (x=22x = 22)

Substitute x=22x = 22 into the function: f(22)=566(1.032)22f(22) = 566 \cdot (1.032)^{22} Using a calculator:

  1. Compute (1.032)22(1.032)^{22}:
    (1.032)222.0003(1.032)^{22} \approx 2.0003
  2. Multiply: f(22)=5662.00031132f(22) = 566 \cdot 2.0003 \approx 1132

Thus, the population in 1995 is approximately 1132 million.


Step C: Population in 2017 (x=44x = 44)

Substitute x=44x = 44 into the function: f(44)=566(1.032)44f(44) = 566 \cdot (1.032)^{44} Using a calculator:

  1. Compute (1.032)44(1.032)^{44}:
    (1.032)443.5416(1.032)^{44} \approx 3.5416
  2. Multiply: f(44)=5663.54162005.57f(44) = 566 \cdot 3.5416 \approx 2005.57

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:

  1. How does an exponential growth model differ from linear growth?
  2. Why does the base of the exponential function, 1.0321.032, indicate a growth rate of 3.2%?
  3. What are some limitations of using exponential models for long-term population predictions?
  4. How would the population change if the growth rate were higher or lower?
  5. 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