After the success of the companys first two months, Santana Rey continues to operate Business Solutions. The November 30, 2019, unadjusted trial balance of Business Solutions (reflecting its transactions for October and November of 2019) follows.

No. Account Title Debit Credit 101 Cash $ 38,464

106 Accounts receivable 12,918

126 Computer supplies 2,645

128 Prepaid insurance 2,040

131 Prepaid rent 3,040

163 Office equipment 8,800

164 Accumulated depreciationOffice equipment $ 0

167 Computer equipment 23,600

168 Accumulated depreciationComputer equipment 0

201 Accounts payable 0

210 Wages payable 0

236 Unearned computer services revenue 0

307 Common stock 66,000

318 Retained earnings 0

319 Dividends 6,400

403 Computer services revenue 37,724

612 Depreciation expenseOffice equipment 0

613 Depreciation expenseComputer equipment 0

623 Wages expense 2,550

637 Insurance expense 0

640 Rent expense 0

652 Computer supplies expense 0

655 Advertising expense 1,658

676 Mileage expense 624

677 Miscellaneous expenses 240

684 Repairs expenseComputer

745 Totals $ 103,724 $ 103,724

Business Solutions had the following transactions and events in December 2019.

Dec. 2 Paid $950 cash to Hillside Mall for Business Solutions share of mall advertising costs.

3 Paid $420 cash for minor repairs to the companys computer.

4 Received $4,250 cash from Alexs Engineering Co. for the receivable from November.

10 Paid cash to Lyn Addie for six days of work at the rate of $105 per day.

14 Notified by Alexs Engineering Co. that Business Solutions bid of $7,400 on a proposed project has been accepted. Alexs paid a $1,800 cash advance to Business Solutions.

15 Purchased $1,300 of computer supplies on credit from Harris Office Products.

16 Sent a reminder to Gomez Co. to pay the fee for services recorded on November 8.

20 Completed a project for Liu Corporation and received $5,825 cash.

2226 Took the week off for the holidays.

28 Received $3,500 cash from Gomez Co. on its receivable.

29 Reimbursed S. Rey for business automobile mileage (500 miles at $0.23 per mile).

31 The company paid $1,100 cash in dividends.

The following additional facts are collected for use in making adjusting entries prior to preparing financial statements for the companys first three months.

The December 31 inventory count of computer supplies shows $630 still available.

Three months have expired since the 12-month insurance premium was paid in advance.

As of December 31, Lyn Addie has not been paid for four days of work at $105 per day.

The computer system, acquired on October 1, is expected to have a four-year life with no salvage value.

The office equipment, acquired on October 1, is expected to have a five-year life with no salvage value.

Three of the four months' prepaid rent have expired.

Required: 1. Prepare journal entries to record each of the December transactions and events for Business Solutions.

2-a. Prepare adjusting entries to reflect a through f.

2-b. Post the journal entries to record each of the December transactions, adjusting entries to the accounts in the ledger.

3. Prepare an adjusted trial balance as of December 31, 2019.

4. Prepare an income statement for the three months ended December 31, 2019.

5. Prepare a statement of retained earnings for the three months ended December 31, 2019.

6. Prepare a balance sheet as of December 31, 2019.

7. Record and post the necessary closing entries as of December 31, 2019.

8. Prepare a post-closing trial balance as of December 31, 2019.