Concept explainers
To find the quadratic models for the yearly revenue of the Expedia and Priceline.com and conclude the findings.
Answer to Problem 90E
The quadratic models are:
In the year 2011, the yearly revenue of the Priceline.com start increases from Expedia.
Explanation of Solution
Given information: The yearly revenue( in millions of dollars) of online travel companies are given as:
Year | Expedia | Priceline.com | |
2008 | 8 | 2937 | 1885 |
2009 | 9 | 2955 | 2338 |
2010 | 10 | 3348 | 3085 |
2011 | 11 | 3449 | 4386 |
2012 | 12 | 4030 | 5261 |
2013 | 13 | 4771 | 6793 |
Where,
Calculation:
(a) Using regression feature of graphing utility, the quadratic model for the yearly revenue
(b) Using graphing utility, the graph of the models based on the given information is given below.
The graph of the Expedia is:
The graph of the Priceline is:
(c) From the graphs, it is concluded that the in the years 2011, the yearly revenue of the Priceline.com increases from Expedia.
(d)The algebraic approximation of the year 2011 is:
Put
(e) On comparing the results for the year 2011, the results are:
Year | Part(c) | Part(d) |
Expedia | 3449 | 3559 |
Priceline.com | 4386 | 4170 |
Chapter 7 Solutions
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