Concept explainers
a.
Find a linear model for the data.
a.
Answer to Problem 82RE
The linear equation is
Explanation of Solution
Given information:
The table shows the sales
Use the regression feature of a graphing utility to find a linear model for the data. Let
Calculation:
Enter the data in calculator.
Press button STAT and select EDIT and press enter.
Enter year in
To find the linear function use regression in calculator, press STAT ans select CAL then press enter, the linear equation is
Hence, the linear equation is
b.
Find the area of the trapezoid bounded by the linear model.
b.
Answer to Problem 82RE
Explanation of Solution
Given information:
The table shows the sales
The total sales for Aéropostale during this eight-year period can be approximated by finding the area of the trapezoid bounded by the linear model you found in part
Calculation:
Area bounded by
c.
Find the area of the trapezoid bounded by the linear model.
c.
Answer to Problem 82RE
the total sale is
Explanation of Solution
Given information:
The table shows the sales
Use the formula for the area of a trapezoid to approximate the total sales for Aéropostale. Calculation:
We know that,
Area of a trapezoid is,
Area=
Hence, the total sale is
Chapter 7 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