he following table shows the number of cell phone subscriptions in a country in billions for selected years x after 2005. 2005 2006 2007 4.3 2009 9.3 0.4 1.5 X y 2008 7.5 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. 2010 9.9 a) Select the correct choice below and fill in the answer boxes within your choice. Round to two decimal places as needed.) OA. The best model for the data is a logarithmic function and is given by f(x) = + Inx. OB. The best model for the data is a logistic function and is given by f(x) = - OC. The best model for the data is an exponential function and is given by f(x) =

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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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.
2006
1.5
X
y
2005
0.4
2007
4.3
2008
7.5
2009
9.3
(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.
2010
9.9
(a) Select the correct choice below and fill in the answer boxes within your choice.
(Round to two decimal places as needed.)
OA. The best model for the data is a logarithmic function and is given by f(x)=
OB. The best model for the data is a logistic function and is given by f(x) = -
OC. The best model for the data is an exponential function and is given by f(x) =
In x.
Dex
ZITE
Transcribed Image Text:The following table shows the number of cell phone subscriptions in a country in billions for selected years x after 2005. 2006 1.5 X y 2005 0.4 2007 4.3 2008 7.5 2009 9.3 (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. 2010 9.9 (a) Select the correct choice below and fill in the answer boxes within your choice. (Round to two decimal places as needed.) OA. The best model for the data is a logarithmic function and is given by f(x)= OB. The best model for the data is a logistic function and is given by f(x) = - OC. The best model for the data is an exponential function and is given by f(x) = In x. Dex ZITE
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