Supplementary Questions Help

System

Please can someone give me some help on the following questions:<BR><BR>1. List the four objectives in selecting accounting policies, and what constraints exists?<BR>2. List 3 aspects of an organisation which influence their accounting systems.<BR>3. Why do organisations action depreciation in their accounts, what is its purpose.<BR><BR>4. What would be the journal entry to close off the revenue accounts listed below, in preparation for the transfer to the final accounts:<BR><BR>Sales DR CR<BR>Rent Received DR CR<BR>Interest Received DR CR<BR><BR>Many Help would be appreciated!!<BR><BR>Thanks<BR>LisaJane<BR>