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 companys share of mall advertising costs. Dec. 3 Paid $1,200 to repair the companys 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 Echos 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 Grahams Business automobile expenses of 600 kilometres at $1.00 per kilometre. Dec. Graham withdrew $3,600 cash from the business