The line graph provides information about monthly costs of mobile phone contractors, namely Domo, Sin TX, and Alpha in particular European state from January to September 2002 in euro.
Overall, prices for Domo and Lex increased steadily and Alpha’s prices incremented significantly. However, prices of Sim Tx stayed relatively the same.
Starting from 15 and 10 euros, Domo and Lex contactors increased prices for their phones up to approximately 24 and nearly 19 euros respectively, with Domo reaching its peak at exactly 25 euros per month in July. The Alpha’s figures stayed relatively stable at around 5 euros throughout period from January to Jun, before surge by 20 euros, making it the most notable rise among all four contractors.
In contrast, Sin Tx followers had to pay nearly 9 euros for their phones in January, with gradual increase to just under 15 euros in June. After that, prices of Sin Tx phones decreased to its initial value the end of the period