Concept explainers
To find: The function that models the given technology, and predict amount US residents will spend on pets or pet- related products and services in Year 7.
Answer to Problem 42E
The function for the model is
Explanation of Solution
Given information:
The given table shows the amount a (in billions dollars) United State residents spent on pets or pet-related products and services.
Year, x | 1 | 2 | 3 | 4 | 5 |
Amount, a | 53.1 | 56.9 | 61.8 | 65.7 | 67.1 |
Formula used:
The data is graphed using graphing calculator.
Calculations:
The graph of given data is shown in Figure-1 here.
The points (1, 53.1), (2, 56.9), and (3, 61.8) are on a straight line whose equation is given by formula
From the graph we observe that maximum number of data points
Prediction:
To predict the amount “ a ” the US residents will spend on pets or pet- related products and services in Year 7, we substitute
Also, from the graph if we sketch line
We can also draw line through last two points but it will not be so accurate it will give amount spent in 7th years 69.9 billion dollars.
Conclusion:
The function for the model is
Chapter 8 Solutions
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