$$

$$

$$Debit$$

$$ CreditSupplies$$

$$

$700$Prepaid Insurance$$

$2,400$Salaries and Wages Payable$$

$800$Unearned Service Revenue$$

$750$Supplies Expense$$

$950$Insurance Expense$$

$400$Salaries and Wages Expense$1,800$Service Revenue$$

$$

$2,000$Answer the following questions $,$ assuming$$ the year

beginning January $1($Please prove an explanation$)($a$)$ 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 $1?($b$)$If the amount in Insurance Expense is the January $31$

adjusting entry, and the original insurance premium was for $1$ year,

what was the total premium.$($c$)$If $$2,500$ of salaries was paid in January, what was the

balance in Salaries Payable at December $31,2009?($d$)$If $$1,800$ was received in January for services

performed in January, what was the balance in Unearned Service

Revenue at December $31,2009?$