At Year-End, Henry Laundry Service, Inc

At year-end, Henry Laundry Service, Inc. noted the following errors in its trial balance:
1. It understated the total debits to the Cash account by $500 when computing the account balance.
2. A credit sale for $311 was recorded as a credit to the revenue account, but the offsetting debit was not posted.
3. A cash payment to a creditor for $2,600 was never recorded.
4. The $680 balance of the Prepaid Insurance account was listed in the credit column of the trial balance.
5. A $24,900 van purchase was recorded as a $24,090 debit to Equipment and a $24,090 credit to Notes Payable.
6. A purchase of office supplies for $150 was recorded as a debit to Office Equipment. The offsetting credit entry was correct.
7. An additional investment of $4,000 by Del Henry was recorded as a debit to Common Stock and as a credit to Cash.
8. The cash payment of the $510 utility bill for December was recorded (but not paid) twice.
9. The revenue account balance of $79,817 was listed on the trial balance as $97,817.
10. A $1,000 cash withdrawal by the stockholder was recorded as a $100 debit to Dividends and $100 credit to cash.
Using the form below, indicate whether each error would cause the trial balance to be out of balance, the amount of any imbalance, and whether a correcting journal entry is required.