A graph of a model for the sales of services between 2004 and 2008 by a leading global provider of staffing services is shown below. million dollars (7, 5682) (6, 5591) (8,5591) 5500 (5, 5317) 5000 (4,4860) 4500 years since 2000 6 7 (a) Use the graph to calculate the average rate of change in sales of services between 2004 and 2007. million per year Interpret the result. Select million per year. Between 2004 and 2007, sales of service by an average of $ (b) Calculate the percentage change in sales between 2007 and 2008. (Round your answer to three decimal places.) % Interpret the result Between 2007 and 2008, sales of service Select by %. (c) Calculate the change in sales between 2004 and 2008. million $ The table gives the price t, in dollars, of a round-trip flight from Denver to Chicago on a certain airline and the corresponding monthly profit P for that airline on that route. Round-trip Airfares Profit (thousands dollars) Ticket Price (dollars) 200 3080 250 3520 300 3760 350 3820 400 3700 450 3380 (a) Find a quadratic model for the data. (Round all numerical values to three decimal places.) P(t) = (b) Use the model to calculate the average rate of change of profit when the ticket price rises from $200 to $250. (Round your answer to three decimal places.) thousand dollars per dollar (c) Use the model to calculate the average rate of change of profit when the ticket price rises from $350 to $400. (Round your answer to three decimal places.) thousand dollars per dollar
A graph of a model for the sales of services between 2004 and 2008 by a leading global provider of staffing services is shown below. million dollars (7, 5682) (6, 5591) (8,5591) 5500 (5, 5317) 5000 (4,4860) 4500 years since 2000 6 7 (a) Use the graph to calculate the average rate of change in sales of services between 2004 and 2007. million per year Interpret the result. Select million per year. Between 2004 and 2007, sales of service by an average of $ (b) Calculate the percentage change in sales between 2007 and 2008. (Round your answer to three decimal places.) % Interpret the result Between 2007 and 2008, sales of service Select by %. (c) Calculate the change in sales between 2004 and 2008. million $ The table gives the price t, in dollars, of a round-trip flight from Denver to Chicago on a certain airline and the corresponding monthly profit P for that airline on that route. Round-trip Airfares Profit (thousands dollars) Ticket Price (dollars) 200 3080 250 3520 300 3760 350 3820 400 3700 450 3380 (a) Find a quadratic model for the data. (Round all numerical values to three decimal places.) P(t) = (b) Use the model to calculate the average rate of change of profit when the ticket price rises from $200 to $250. (Round your answer to three decimal places.) thousand dollars per dollar (c) Use the model to calculate the average rate of change of profit when the ticket price rises from $350 to $400. (Round your answer to three decimal places.) thousand dollars per dollar
College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter2: Functions
Section2.4: Average Rate Of Change Of A Function
Problem 33E: DVD Player sales The table shows the number of DVD play-ers sold in a small electronics store in the...
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Transcribed Image Text:A graph of a model for the sales of services between 2004 and 2008 by a leading global provider of staffing services is shown below.
million dollars
(7, 5682)
(6, 5591)
(8,5591)
5500
(5, 5317)
5000
(4,4860)
4500
years since 2000
6
7
(a) Use the graph to calculate the average rate of change in sales of services between 2004 and 2007.
million per year
Interpret the result.
Select
million per year.
Between 2004 and 2007, sales of service
by an average of $
(b) Calculate the percentage change in sales between 2007 and 2008. (Round your answer to three decimal places.)
%
Interpret the result
Between 2007 and 2008, sales of service
Select
by
%.
(c) Calculate the change in sales between 2004 and 2008.
million
$
Transcribed Image Text:The table gives the price t, in dollars, of a round-trip flight from Denver to Chicago on a certain airline and the corresponding monthly profit P for that airline on that route.
Round-trip Airfares
Profit (thousands
dollars)
Ticket Price
(dollars)
200
3080
250
3520
300
3760
350
3820
400
3700
450
3380
(a) Find a quadratic model for the data. (Round all numerical values to three decimal places.)
P(t) =
(b) Use the model to calculate the average rate of change of profit when the ticket price rises from $200 to $250. (Round your answer to three decimal places.)
thousand dollars per dollar
(c) Use the model to calculate the average rate of change of profit when the ticket price rises from $350 to $400. (Round your answer to three decimal places.)
thousand dollars per dollar
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