Exercise 3-7 A partial adjusted trial balance of Riverbed Company at January 31, 2017, shows the following RIVERBED COMPANY ADJUSTED TRIAL BALANCE JANUARY 31, 2017 Debit $1,040 4,440 Credit Supplies Prepaid Insurance Salaries and Wages Payablee Unearned Service Revenue Supplies Expense Insurance Expense Salaries and Wages Expense Service Revenue $1,140 1,090 950 740 2,140 2,340 Answer the following questions, assuming the year begins January 1