Final answer:
The penalty for not filing Oregon tax returns for the last 3 years is $0.
Step-by-step explanation:
The penalty for Ed not filing an Oregon tax return for the last 3 years can be calculated as follows:
Year 2010: $180 owed
Year 2011: $120 owed
Year 2012: $350 refund
To calculate the penalty, we need to determine the total amount Ed owes for the three years. Subtracting the refund from the total owed, we have:
Total owed = ($180 + $120) - $350 = $-50
Since the total owed is negative, it means Ed actually overpaid the state tax for the three years. Therefore, the penalty is $0.