Helen Drysdale, a medical doctor, opened a medical practice. The business completed the following transactions: Sep 1Drysdale invested $20,000 cash to start her medical practice. The business issued ordinary shares to Drysdale. 1Purchased medical supplies on account totaling $7,500. 2Paid monthly office rent of $5,500. 3Recorded $15,000 revenue for service rendered to patients, received cash of $3,500, and sent bills to patients for the remainder. After these transactions, how much cash does the business have to work with? Use a T-account to show your answer. (Leave unused cells blank.) Cash Sep Sep Bal