Answer:
Plan B
Step-by-step explanation:
Let's take plan a for example.
Plan A= 35.00 a month and 10 cents for message fee. They're 30 days in a month(most months)
35x30= 1,050 That's how much she would be paying monthly with plan A. It says she send 68 text messages so 68x10=680 which is 6 dollars and 8 cents a month . (and that's her fee per message)
Now, Plan B =18.00 monthly fee. 30x18=540 and her fee would be 68x30=2040 =20.4 which is 20 dollars and 4 cents a month for messages
now we add these, plan A 1,050+6.80=785
plan B= 560.4
Thus, plan B would be a better option