The line graph gives information about the monthly cost of four different mobile phone contracts in a European country between January and September 2002,measured in euro
Overall,the cost of Alpha underwent a noticeable increase,despite being the lowest at the beginning.The opposite was true for the figure for Domo.Lex experienced a slight increase,while the Sim TX contract was the cheapest at the end of the period.
In January,Domo started at 15 euro and this amount increases to about 25 euro,which was the highest price in September.Alphan’s initial price was about 5 euro and increased noticeable between January and September,reaching 25 euro.
Looking at the lowest figures,Sim TX’s cost started at about 10 euro in January,and it significantly decreased to about 14 euro in January,but the next month it declined to 10 euro,however it dramatically rose and reached 19 euro in September.
