entries for the statement

1) MapleLeaf company find the owing servce $18,000 in the unearned revenue has been provided during the September 2) In the beginning of the September, there was $200 in the office supplies account. The company purchased another $700 office supples in the Septermber. After the whole month, now only $150 office supplies left over there. 3) Business paid $3000 in advance for three month rent in the beginning of the September. Now it has been one month. 4) On Sep1, the business bought a computer server for 28,000 , estimated useful life is years. The residue value is $4000