Deborah Consultants had the following accounts and account balances after adjusting entries. Assume all accounts have normal balances. Calculate the amount of service revenue and prepare the adjusted trial balance for Deborah Consultants as of December 31, 2015.

Cash $6,000

Deborah, Withdrawals $3,000

Accounts Receivable 2,000

Office Supplies 1,800

Salaries Expense 4,000

Equipment 15,000

Rent Expense 800

--Accumulated Depreciation--

Equipment 9,000

Deborah, Capital 15,000

--Depreciation Expense--

Equipment 1,500

Supplies Expense 500

a) Service Revenue = ?

b) Adjusted Trial Balance