Concept explainers
a.
Plot a graph.
a.
Answer to Problem 82E
Explanation of Solution
Calculation:
The objective is to use a graphing utility to create a
Create a scatter plot as follows:
Press
Press
Now press
Now graph the model in the same viewing window as follows:
Input equation
The display is shown below.
Now press the
b.
Verify that the model fit the data.
b.
Answer to Problem 82E
The model fits the data well.
Explanation of Solution
Calculation:
From the above display it is very clear that each data value is very close to the graph model.
Hence, the model fits the data well.
c.
Use the model to predict the salary for classroom teachers will exceed
c.
Answer to Problem 82E
Explanation of Solution
Calculation:
Set up the inequality as shown below.
To find the key numbers, set numerator and denominator equal to zero and solve for
Because
Create the test interval using the domain as shown below.
Hence, the salary for classroom teacher will exceed
d.
Is the model valid for long-term predictions of classroom teacher salaries?
d.
Answer to Problem 82E
Yes, model is valid for long term prediction.
Explanation of Solution
Calculation:
Yes, model is valid for long term prediction.
Chapter 2 Solutions
EBK PRECALCULUS W/LIMITS
- Calculus: Early TranscendentalsCalculusISBN:9781285741550Author:James StewartPublisher:Cengage LearningThomas' Calculus (14th Edition)CalculusISBN:9780134438986Author:Joel R. Hass, Christopher E. Heil, Maurice D. WeirPublisher:PEARSONCalculus: Early Transcendentals (3rd Edition)CalculusISBN:9780134763644Author:William L. Briggs, Lyle Cochran, Bernard Gillett, Eric SchulzPublisher:PEARSON
- Calculus: Early TranscendentalsCalculusISBN:9781319050740Author:Jon Rogawski, Colin Adams, Robert FranzosaPublisher:W. H. FreemanCalculus: Early Transcendental FunctionsCalculusISBN:9781337552516Author:Ron Larson, Bruce H. EdwardsPublisher:Cengage Learning