Rowland & Sons Air Transport Service, Inc., has been in operation for three years. The following transactions occurred in February: Feb. 1 Paid $200 for rent of hangar space in February. Feb. 4 Received customer payment of $800 to ship several items to Philadelphia next month. Feb. 7 Flew cargo from Denver to Dallas; the customer paid in full ($900 cash). Feb.10 Incurred and paid $1,200 in pilot wages for flying in February. Feb.14 Paid $100 for an advertisement run in the local paper on February 14. Feb.18 Flew cargo for two customers from Dallas to Albuquerque for $1,700; one customer paid $500 cash and the other asked to be billed $1,200. Feb.25 Purchased on account $1,350 in supplies for future use on the planes. Required: 1. Prepare accrual basis journal entries for each transaction. 2. Calculate the company's preliminary net income. 3. Calculate the company's net profit margin expressed as a percent. Answer is complete but not entirely correct. Complete this question by entering your answers in the tabs below. Required 1 Required 2 Required 3 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.)