Javier has $350 in his bank account.
$350 is below $500
If he makes no deposits or withdrawals, He will be below the $500 balance for the three months.
He will pay $7.50 each month for 3 months.
$7.50 x 3 = $22.5
Subtract that amount to his balance:
350-22.5 = $327.5
At the end of three months, there is $327.5