The following table shows the number of cell phone subscriptions in a country in billions for selected years x after 2005. 2005 2006 2007 2008 2009 2010 y 0.3 1.3 4.1 7.4 9.4 9.8 (a) Find a function C(x) that models the data, where x is years after 2005. (b) Predict the number of cell phone subscriptions in 2012. ...... (a) Select the correct choice below and fill in the answer boxes within your choice. (Round to two decimal places as needed.) O A. The best model for the data is an exponential function and is given by f(x) = O* The best model for the data is a logistic function and is given by f(x) = В. 1+

College Algebra
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ISBN:9781938168383
Author:Jay Abramson
Publisher:Jay Abramson
Chapter6: Exponential And Logarithmic Functions
Section6.8: Fitting Exponential Models To Data
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The following table shows the number of cell phone subscriptions in a country in billions for selected years x after 2005.
X
2005
2006
2007
2008
2009
2010
y
0.3
1.3
4.1
7.4
9.4
9.8
(a) Find a function C(x) that models the data, where x is years after 2005
(b) Predict the number of cell phone subscriptions in 2012.
(a) Select the correct choice below and fill in the answer boxes within your choice.
(Round to two decimal places as needed.)
O A. The best model for the data is an exponential function and is given by f(x) =
Ов.
The best model for the data is a logistic function and is given by f(x) =
1+
e
OC. The best model for the data is a logarithmic function and is given by f(x) =
In x.
Transcribed Image Text:The following table shows the number of cell phone subscriptions in a country in billions for selected years x after 2005. X 2005 2006 2007 2008 2009 2010 y 0.3 1.3 4.1 7.4 9.4 9.8 (a) Find a function C(x) that models the data, where x is years after 2005 (b) Predict the number of cell phone subscriptions in 2012. (a) Select the correct choice below and fill in the answer boxes within your choice. (Round to two decimal places as needed.) O A. The best model for the data is an exponential function and is given by f(x) = Ов. The best model for the data is a logistic function and is given by f(x) = 1+ e OC. The best model for the data is a logarithmic function and is given by f(x) = In x.
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