what is the adjusting entries

1-

December 15: Byte purchased $500.00 of supplies on account.

A physical inventory showed that only $782.00 worth of supplies remained on hand as of December 31.

2-

December 28: Byte billed various miscellaneous local customers $14,700.00 for computers that were delivered today.

dec 31: Bill various miscellaneous customers 200% of the cost of the computers that were drop shipped and received on December 28.

3-

December 23: Byte received an emailed invoice in the amount of $7,350.00 for computers that were drop shipped and received today.

December 28: Record the cost of the computers that were sold today.

Record the cost of the computers that were sold on December 28.