5.5band
The graph below shows US consumers' average annual expenditures on cell phone and residential phone services between 2001 and 2010. The graph illustrates annually average of US customers expenditures on mobile and residental phone services in 2001 to 2010.
Overall, at first the cell phone services' cost was low and the residental phone services' cost was more. But at the end of period the cell phone services incresed and the re...