E3-21A. (Learning Objective 3: Adjust the accounts) Jenkins Rentals Company faced the following situations. Journalize the adjusting entry needed at December 31,2020, for each situation. Consider each fact separately a. The business has interest expense of $3,100 that it must pay early in January 2021 b. Interest revenue of $4,400 has been earned but not yet received. c. On July 1, 2020, when the business collected $14,200 rent in advance, it debited Cash d. Salary expense is $5,700 per day-Monday through Friday-and the business pays e. The unadjusted balance of the Supplies account is $3,100. The total cost of supplies on f. Equipment was purchased on January 1 of this year at a cost of $140,000. The equip- and credited Unearned Rent Revenue. The tenant was paying for two years' rent. employees each Friday. This year, December 31 falls on a Thursday hand is $1,200. ment's useful life is five years. There is no residual value. Record depreciation for this year and then determine the equipment's book value