After operating for a couple of weeks, Jonathan Wen's business completed the following transaction during the latter part of September:

Sept. 22 performed services for clients on account ,$6,000

Sept 30 Received cash on account from clients $4,500

Sept. 30 Received an internet bill,$150,which will paid during November.

Sept 30 Paid cash for advertising expense of $900

Sept 30 Paid cash for monthly salary to his assistant, $3,900. Journalize the business transaction. Included an explanation with each journal entry.