After the success of the company$$s first two months, Santana Rey continues to operate Business Solutions. The November $30,2021,$ unadjusted trial balance of Business Solutions $($reflecting its transactions for October and November of $2021)$ follows.

Number Account Title Debit Credit

$101$ Cash $ $39,064$

$106$ Accounts receivable $12,718$

$126$ Computer supplies $2,545$

$128$ Prepaid insurance $2,040$

$131$ Prepaid rent $3,160$

$163$ Office equipment $8,100$

$164$ Accumulated depreciation$$Office equipment $ $0$

$167$ Computer equipment $20,800$

$168$ Accumulated depreciation$$Computer 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 $6,300$

$403$ Computer services revenue $34,314$

$612$ Depreciation expense$$Office equipment $0$

$613$ Depreciation expense$$Computer equipment $0$

$623$ Wages expense $2,250$

$637$ Insurance expense $0$

$640$ Rent expense $0$

$652$ Computer supplies expense $0$

$655$ Advertising expense $1,658$

$676$ Mileage expense $694$

$677$ Miscellaneous expenses $220$

$684$ Repairs expense$$Computer $765$

$901$ Income summary $0$

Totals $ $100,314$ $ $100,314$

Business Solutions had the following transactions and events in December $2021.$

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

December $3$ Paid $$500$ cash for minor repairs to the company$$s computer.

December $4$ Received $$4,050$ cash from Alex$$s Engineering Company for the receivable from November.

December $10$ Paid cash to Lyn Addie for six days of work at the rate of $$120$ per day.

December $14$ Notified by Alex$$s Engineering Company that Business Solutions's bid of $$7,600$ on a proposed project has been accepted. Alex$$s paid a $$1,800$ cash advance to Business Solutions.

December $15$ Purchased $$1,700$ of computer supplies on credit from Harris Office Products.

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

December $20$ Completed a project for Liu Corporation and received $$5,925$ cash.

December $22-26$ Took the week off for the holidays.

December $28$ Received $$3,200$ cash from Gomez Company on its receivable.

December $29$ Reimbursed S$.$ Rey for business automobile mileage $(600$ miles at $$0\mathrm{.}32$ per mile$).$

December $31$ Paid $$1,300$ cash for dividends.

The following additional facts are collected for use in making adjusting entries prior to preparing financial statements for the company$$s 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 $$120$ 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. Post those entries to the accounts in the ledger.

$2-$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 $31,2021.$

$4.$ Prepare an income statement for the three months ended December $31,2021.$

$5.$ Prepare a statement of retained earnings for the three months ended December $31,2021.$

$6.$ Prepare a classified balance sheet as of December $31,2021.$

$7.$ Record the necessary closing entries as of December $31,2021.$

$8.$ Prepare a post$-$closing trial balance as of December $31,2021.$