Answer:
$7,000
Explanation:
For the purchase of office supplies, the entries required are
Debit Office supplies account
Credit cash/accounts payable
When supplies are used up, the entries required are
Debit  Supplies expense account
Credit Office supplies account
As such where the Office Supplies account has a debit balance of $9,000 on the Unadjusted Trial Balance. In the Adjustments there is a credit of $2,000.
The balance in the office supplies account after adjustments
= $9,000 - $2,000
= $7,000
