Lori Matlock operates a graphic arts business. A trial balance on June 30, 2016, before recording any adjusting entries, appears as follows: Lori Matlock UNADJUSTED TRIAL BALANCE June 30, 2016 ACCOUNT TITLE DEBIT CREDIT 1 Cash 7,000.00 2 Prepaid Rent 18,000.00 3 Supplies 15,210.00 4 Office Equipment 46,120.00 5 Accumulated Depreciation-Equipment 4,000.00 6 Accounts Payable 1,800.00 7 Notes Payable 2,000.00 8 Capital Stock 50,000.00 9 Retained Earnings 24,350.00 10 Dividends 8,400.00 11 Revenue 46,850.00 12 Utilities Expense 2,850.00 13 Salaries Expense 19,420.00 14 Advertising Expense 12,000.00 15 Totals 129,000.00 129,000.00 Other Data a. The monthly rent is $600. b. Supplies on hand on June 30, 2016, amount to $1,290. c. The office equipment was purchased on June 1, 2015. On that date, it had an estimated useful life of ten years and a salvage value of $6,120. d. Interest owed on the note payable but not yet paid amounts to $50. e. Salaries of $620 are owed but unpaid to employees at the end of the month.

Required: 1. Prepare in general journal form the necessary adjusting entries at June 30, 2016. 2. Note that the unadjusted trial balance reports a credit balance in Accumulated DepreciationEquipment of $4,000. Explain why the account contains a balance of $4,000 on June 30, 2016.