Journalize the adjusting entries needed at Dec. 31 for each of the following independent situations.

a. The business owes interest expense of $1400 that it will pay early in the next period.

b. Interest revenue of $9000 has been earned but not yet received. The business holds a $20000 not receivable.

c. On July 1, when we collected $6000 rent in advance, we debited cash and credited unearned rent revenue. The tenant was paying for two years rent.

d. Salary expense is $1000 per day - Monday through Friday -  and the business pays employees each Friday. This year December 31 falls on a Thursday.

e. The unadjusted balance of the Supplies account is $3100. The total cost of supplies on hand is $1200.

f. Equipment was purchased last year at a cost of $10,000. The equipments useful life is four years. Record the years depreciation

g. On september 1, when we prepared $1800 for a one-year insurance policy, we debit prpaid insurance and credit cash.