Service Revenue. kE4. (LO 2), AP The unadjusted trial balance of Northern Exposure Inc. had these balances for the following select accounts: Supplies $3,100, Unearned Service Revenue $8,200, and Prepaid Rent Service Revenue. kE4. (LO 2), AP The unadjusted trial balance of Northern Exposure Inc. had these balances for the following select accounts: Supplies $3,100, Unearned Service Revenue $8,200, and Prepaid Rent