6band
The graph below shows US consumers' average annual expenditures on cell phone and residential phone services between 2001 and 2010. Write a report for a university, lecturer describing the information shown below. The line chart indicates the average expenditures per annual of mobile phone and residential phone in America between 2001 and 2010
Overall, it is clear from the chart that the proportion of consumer expenditures on mobile device was increased during this time period, while residential phone usages...