A partial adjusted trial balance of Safin Company at January 31, 2012, shows the following. SAFIN COMPANY ADJUSTED TRIAL BALANCE JANUARY 31, 2012 Debit Credit Supplies $1,030 Prepaid Insurance 3,180 Salaries and Wages Payable $930 Unearned Revenue 880 Supplies Expense 950 Insurance Expense 530 Salaries and Wages Expense 1,930 Service Revenue 2,130 Answer the following questions, assuming the year begins January 1. If the amount in Supplies Expense is the January 31 adjusting entry, and $850 of supplies was purchased in January, what was the balance in Supplies on January 1? Beginning balance of supplies $__________ If $2,830 of salaries and wages was paid in January, what was the balance in Salaries and Wages Payable at December 31, 2011? Beginning balance of salaries and wages payable $_________ If $1,730 was received in January for services performed in January, what was the balance in Unearned Service Revenue at December 31, 2011? Beginning unearned service revenue December 31, 2011 $__________