Journalize the adjusting entry needed at December 31 for each of the following independent situations.

a. The business owes interest expense of \(\$ 1,400\) that it will pay early in the next period.

b. Interest revenue of \(\$ 900\) has been earned but not yet received. The business holds a \(\$ 20,000\) note receivable.

c. On July 1, when we collected \(\$ 6,000\) rent in advance, we debited Cash and credited Unearned Rent Revenue. The tenant was paying for two years' rent.

d. Salary expense is \(\$ 1,000\) 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 \(\$ 3,100\). The total cost of supplies on hand is \(\$ 1,200\).

f. Equipment was purchased last year at a cost of \(\$ 10,000\). The equipment's useful life is four years. Record the year's depreciation.
g. On September 1, when we prepaid \(\$ 1,800\) for a one-year insurance policy, we debited Prepaid Insurance and credited Cash.