=+J. F. Outz, M.D., has been practicing as a cardiologist for three years. During April 2009, Outz completed the following transactions in her practice of cardiology: Apr. 1. Paid office rent for April, $800. 3. Purchased equipment on account, $2,100. 5. Received cash on account from patients, $3,150. 8. Purchased X-ray film and other supplies on account, $245. 9. One of the items of equipment purchased on April 3 was defective. It was returned with the permission of the supplier, who agreed to reduce the account for the amount charged for the item, $325. 12. Paid cash to creditors on account, $1,250.