Sloan Company has the following account balances at December $31,$ the end of its fiscal year $($all accounts have normal balances$).$

a$.$ Prepare Sloan Company's accounting adjustments at December $31$ using journal entries and the following additional information.

Prepaid advertising at December $31$ is $$800.$

Unpaid wages earned by employees in December are $$2,600.$

Prepaid insurance at December $31$ is $$2,280.$

Unearned service fees at December $31$ are $$3,000.$

Rent revenue of $$1,000$ owed by a tenant is not recorded at December $31.$

b$.$ Record journal entries for the following transactions on January $4$ of the following year:

Payment of $$4,800$ cash in wages.

Cash receipt from the tenant of the $$1,000$ rent revenue.

Note: List any multiple debits or any multiple credits in alphabetical order by account name.