
Concept explainers
a.
To use a graphing utility to plot the data and graph the model for
a.

Answer to Problem 113E
The model very closely represents the data.
Explanation of Solution
Given: The U.S. production of crude oil
Year , t | ||
4 | 11.6 | 63 |
5 | 11.0 | 63 |
6 | 10.8 | 68 |
7 | 10.7 | 76 |
8 | 10.6 | 89 |
9 | 11.3 | 98 |
10 | 11.6 | 126 |
11 | 12.0 | 171 |
12 | 13.8 | 234 |
13 | 15.7 | 321 |
Concept Used:
Model of the data is ,
Calculation: For the model for
Year , t | |
4 | 11.6 |
5 | 11.0 |
6 | 10.8 |
7 | 10.7 |
8 | 10.6 |
9 | 11.3 |
10 | 11.6 |
11 | 12.0 |
12 | 13.8 |
13 | 15.7 |
Using a graphing utility graph of the above table is shown below.
Where t year as x -axis and the corresponding crude oil
Conclusion:
For the graph it is clear that the model very closely represents the data.
b.
To find would use the model to estimate the production of crude oil in 2015, 2020, explain.
b.

Answer to Problem 113E
So, above models can be used to estimate the production of crude oil in 2015, 2020, by substitute t =15 in the above model equation to find the value of
Explanation of Solution
Given:
Given: An open box with locking tabs is to be made from a square piece of material 24 inches on a side. This is done by cutting equal squares from the corners and folding along the dashed lines. The U.S. production of crude oil
Year , t | ||
4 | 11.6 | 63 |
5 | 11.0 | 63 |
6 | 10.8 | 68 |
7 | 10.7 | 76 |
8 | 10.6 | 89 |
9 | 11.3 | 98 |
10 | 11.6 | 126 |
11 | 12.0 | 171 |
12 | 13.8 | 234 |
13 | 15.7 | 321 |
Concept Used:
Model of the data is ,
Calculation:
To estimate the production of crude oil in 2015, 2020,
Substitute t =15 in the above model equation to find the value of
Substitute t =20 in the above model equation to find the value of
Conclusion:
So, above models can be used to estimate the production of crude oil in 2015, 2020, by substitute t =15 in the above model equation to find the value of
c.
To use a graphing utility to plot the data and graph the model for
c.

Answer to Problem 113E
The model very closely represents the data.
The models can be used to estimate the production of crude oil in 2015, 2020, by substitute t =15 in model equation to find the value of
Explanation of Solution
Given:
Given: The U.S. production of crude oil
Year , t | ||
4 | 11.6 | 63 |
5 | 11.0 | 63 |
6 | 10.8 | 68 |
7 | 10.7 | 76 |
8 | 10.6 | 89 |
9 | 11.3 | 98 |
10 | 11.6 | 126 |
11 | 12.0 | 171 |
12 | 13.8 | 234 |
13 | 15.7 | 321 |
Concept Used:
Model of the data is ,
Calculation: For the model for
Year , t | |
4 | 63 |
5 | 63 |
6 | 68 |
7 | 76 |
8 | 89 |
9 | 98 |
10 | 126 |
11 | 171 |
12 | 234 |
13 | 321 |
The graph on above table data is shown below.
Where t year as x -axis and the corresponding solar and photovoltaic energy
Conclusion:
For the graph it is clear that the model very closely represents the data.
So, above models can be used to estimate the production of crude oil in 2015, 2020, by substitute t =15 in the above model equation to find the value of
Chapter 2 Solutions
Precalculus with Limits: A Graphing Approach
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