After the success of its first two months, Mary Graham has decided to continue operating Echo Systems. $($The transactions that occurred in these months are described in Chapter $2.)$ Before proceeding in December, Graham adds these new accounts to the chart of accounts for the ledger:

Accumulated Depreciation, Office Equipment; Accumulated Depreciation, Computer Equipment; Wages Payable; Unearned Computer Services Revenue; Depreciation Expense, Office Equipment; Depreciation Expense, Computer Equipment; Insurance Expense; Rent Expense; Computer Supplies Expense

Prepare journal entries to record each of the following transactions for Echo Systems. Post the entries to the accounts in the ledger.

Dec. $3$ Paid $$2,100$ to the Lakeshore Mall for the company$$s share of mall advertising costs.

Dec. $3$ Paid $$1,200$ to repair the company$$s computer.

Dec. $4$ Received $$7,500$ from Alamo Engineering Co$.$ for the receivable from the prior month.

Dec. $10$ Paid Carly Smith for six days$$ work at the rate of $$200$ per day.

Dec. $14$ notified by Alamo Engineering Co$.$ that Echo$$s bid of $$12,000$ on a proposed project was accepted. Alamo paid in advance of $$3,000.$

Dec. $17$ Purchased $$2,310$ of computer supplies on credit from Abbott Office Products.

Dec. $18$ Sent a reminder to Fostel Co$.$ to pay the fee for services originally recorded on November $8.$

Dec. $20$ Completed a project for Elite Corporation and received $$11,2500$ cash.

Dec. $24-28$ Took a week off for the holidays.

Dec. $31$ Received $$5,700$ from Fostek Co$.$ on its receivable.

Dec. $31$ Reimbursed Mary Graham$$s Business automobile expenses of $600$ kilometres at $$1\mathrm{.}00$ per kilometre.

Dec$\mathrm{.}31$ Graham withdrew $$3,600$ cash from the business.

$2.$ Prepare adjusting entries to record the following additional information collected on December $31,2023.$ Post the netries to the accounts in the ledger.

The December $31$ inventory of computer supplies was $$1440$

Three months have passed since the annual insurance premium was paid

As of the end of the year, Carly Smith has not been paid for four days of work at the rate of $$200$ per day.

The computer is expected to have a four year life with no residual value.

The office equipment is expected to have a three year life with no residual value.

Prepaid rent for three of the four months has expired.

$3.$ Prepare an adjusted trial balance as of December $31$st$,2023$

$]4.$ Prepare an income statement and statement of changes in equity for the three months ended December $31,2023.$

$5.$ Prepare a balance sheet as of december $31,2023$