Respuesta :

Answer:

She has to pay $131.50 for the months she was on her cell phone.

Step-by-step explanation:

Basically, you add 320+243+489 = 1052

Then you divide 1052 with 200 which you get 5.26

Finally, you multiply 5.26 with $25 which equals 131.50

I hope this is the answer you are looking for!