The trial balance of the Trishia Company on December 31, 2007 (the end of its annual accounting period) included the following account balances before adjustments:

Notes receivable .........$10,000 debit

Insurance expense ......... 3,000 debit

Delivery equipment ......... 14,000 debit

Building ............ 60,000 debit

Unearned rent .......... 4,320 credit

Notes payable .......... 7,200 credit

Office supplies expense ...... 1,000 debit

Reviewing the company’s recorded transactions and accounting records for 2007, you find the following data pertaining to the December 31, 2007 adjustments:

1. On July 2, 2007 the company had accepted a $10,000, nine-month, 10% (annual rate) note receivable from a customer. The interest is to be collected when the note is collected.

2. On August 2, 2007 the company had paid $3,000 for a two-year insurance policy.

3. The building was acquired in 1995 and is being depreciated using the straight-line method over a 25-year life. It has an estimated residual value of $8,000.

4. The delivery equipment was purchased on April 2, 2007. It is to be depreciated using the straight-line method over a 10-year life, with an estimated residual value of $2,000.

5. On September 1, 2007 the company had received two years’ rent in advance ($4,320) for a portion of a building it is renting to Oscar Company.

6. On December 1, 2007 the company had issued a $7,200, three-month, 12% (annual rate) note payable to a supplier. The interest is to be paid when the note is paid.

7. On January 2, 2007 the company purchased $1,000 of office supplies. A physical count on December 31, 2007 revealed that there are $400 of office supplies still on hand. No supplies were on hand at the beginning of the year.

Required

Prepare the adjusting entries that are necessary to bring the Trishia Company accounts up to date on December 31, 2007. Each journal entry explanation should summarize your calculations.