Concept explainers
(a)
To find: The linear model of the data.
(a)

Answer to Problem 31E
Explanation of Solution
Given:The population P (in millions) of Jamacia for the years 2001 through 2016 are shown in the table, where t represents the year, with
Using regression graphing calculator, the linear model of the above data is
The coefficient of determination is
Now plot the model and data on same window view.
(b)
To find: The power model of the data.
(b)

Answer to Problem 31E
Explanation of Solution
Given: The population P (in millions) of Jamacia for the years 2001 through 2016 are shown in the table, where t represents the year, with
Using regression graphing calculator, the power model of the above data is
The coefficient of determination is
Now plot the model and data on same window view.
(c)
To find: The exponential model of the data.
(c)

Answer to Problem 31E
Explanation of Solution
Given: The population P (in millions) of Jamacia for the years 2001 through 2016 are shown in the table, where t represents the year, with
Using regression graphing calculator, the exponential model of the above data is
The coefficient of determination is
Now plot the model and data on same window view.
(d)
To find: The logarithmic model of the data.
(d)

Answer to Problem 31E
Explanation of Solution
Given: The population P (in millions) of Jamacia for the years 2001 through 2016 are shown in the table, where t represents the year, with
Using regression graphing calculator, the logarithmic model of the above data is
The coefficient of determination is
Now plot the model and data on same window view.
(e)
To find: The model which is best fit for data.
(e)

Answer to Problem 31E
Linear Model
Explanation of Solution
Given: The population P (in millions) of Jamacia for the years 2001 through 2016 are shown in the table, where t represents the year, with
Linear model,
Power model,
Exponential model,
Logarithmic model,
The coefficient of determination of linear model is nearest 1.
So, Best fir model would be linear model.
(f)
To find: The population in year 2025 of each model.
(f)

Answer to Problem 31E
For linear model population in Jamaica is 3.014
For power model population in Jamaica is 2.909
For exponential model population in Jamaica is 3.024
For logarithmic model population in Jamaica is 2.908
Explanation of Solution
Given: The population P (in millions) of Jamacia for the years 2001 through 2016 are shown in the table, where t represents the year, with
For 2025 corresponding value of
Put
Linear model,
Power model,
Exponential model,
Logarithmic model,
(g)
To predict: The best fir model for population in year 2025.
(g)

Answer to Problem 31E
Power model
Explanation of Solution
Given: The population P (in millions) of Jamacia for the years 2001 through 2016 are shown in the table, where t represents the year, with
For 2025 corresponding value of
Put
Linear model,
Power model,
Exponential model,
Logarithmic model,
According to above calculation best model is power model.
(h)
To choose: The model different for different cases.
(h)

Answer to Problem 31E
No
Explanation of Solution
Given: The population P (in millions) of Jamacia for the years 2001 through 2016 are shown in the table, where t represents the year, with
For 2025 corresponding value of
Put
Linear model,
Power model,
Exponential model,
Logarithmic model,
According to above calculation best model is power model.
According to graph best model is linear because the coefficient of determination is nearest to 1 but according to calculation model is different because data may be vary.
Chapter 3 Solutions
PRECALCULUS W/LIMITS:GRAPH.APPROACH(HS)
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