The following selected accounts were taken from the general ledger of the Cone Corporation on September 30 before adjusting entries have been made. Cone makes adjusting entries quarterly.

Debit Credit

Supplies 4,000

Prepaid Rent 5,400

Building 100,000

Notes Receivable 25,000

Accumulated Depreciation 20,000

Unearned revenue 8,500

Additional Information

Rent expires at a rate of $900 per month.

Supplies on hand total $2,000.

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The building depreciates at a rate of $2,700 per quarter.

$5,000 of the $8,500 unearned revenue has been earned during the quarter.

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Required

Prepare the necessary adjusting journal entries at September 30.