Answer
Answer H
Work Step by Step
Every month, Maya has to pay the monthly fee of 3.90.
During one month, Maya makes 18 transactions. Subtracting 10 free transactions, there are 8 transactions Maya has to pay $\$0.15$ per transaction: $8.(0.15)$
The total fee Maya has to pay: $T=3.90+8(0.15)$
The correct answer is H.