Please Help!!! Can you please show me how to do this?

E3-11 Recording Journal Entries and Determining Net Income and Net Profit Margin [LO 3-2, LO 3-3, LO 3-5]

Rowland & Sons Air Transport Service, Inc. has been in operation for three years. The following transactions occurred in February:

Feb.1)	Paid $555 for rent of hangar space in February.
Feb. 4)	Received customer payment of $1,100 to ship several items to Philadelphia next month.
Feb. 7)	Flew cargo from Denver to Dallas; the customer paid in full ($1,100 cash).
Feb. 10)	Paid pilots $1,850 in wages for flying in February.
Feb. 14)	Paid $164 for an advertisement run in the local paper on February 14.
Feb. 18)	Flew cargo for two customers from Dallas to Albuquerque for $2,365; one customer paid $825 cash and the other asked to be billed $1,540.
Feb. 25)	Purchased on account $1,570 in supplies for future use on the planes.

Required:
1.	Prepare accrual basis journal entries for each transaction. (If no entry is required for a transaction/event, select "No Journal Entry Required" in the first account field.)

2.	Calculate the companys preliminary net income

3.	Calculate the companys net profit margin expressed as a percent. (Round your answer to 1 decimal place.)