How much did she spend?

Question

Tina's cell phone carrier charges her a flat rate of $60 a month for unlimited talk/text and 4 GB of data. She is charged $5 for every GB she goes over. If one month she used 7 GB

Answer 1

The question is incomplete. However, if you are asking what the charge would be for Tina using 7 GB of data, it would be:

 

60 + 3(5) = 60 + 15 = $75

 

because she exceeded her data usage limit by 3 GB