On September 9, Mavtech paid $30,000 in advance to suppliers to buy 30 computers.

On September 10, Mavtech paid $450 and bought office supplies

The computers that were paid for on September 9th were delivered to Mavtech on September 15.

On September 17, a customer placed an order on Mavtech for 25 computers for a total price of $31,000. (This does not meet revenue recognition criteria.)

On September 21, Mavtech hired an employee. The employees wage was fixed at $2,400 per month. The employee will be paid every month on the 21st. The first payment will be made on October 21.

On September 22, Mavtech purchased an additional 40 computers for $40,000 on credit, due for payment on October.

journal entries just checking i did mine right.