The chart below gives information on the average cost of a monthly plan from four different mobile phone providers in a European country, between January and September 2012, measured in euros.

The line chart demonstrates changes in the plan of monthly expense of four distinct mobile phone suppliers – Domo, Lex, Sim TX, and Alpha – in a nation in Europe during the first three quarters of 2012, in euros. Overall, almost all providers witnessed a considerable increase in their monthly cost, with the exception of […]