Need help journalizing...

Paid $1220 for salaries due employees, of which $600 is for November and $620 is for October salaries payable

Performed services on account and billed customers for services provided $900


Received $750 from customers for services to be provided in the future

Your Accounts are as follows:
Transaction #1, Cash, Salaries Payable, and Salaries Expense

Transaction #2, Service Recenue and Accounts Receivable

Transaction #3, Cash and Unearned Service Revenue