The following events were experienced by Cornerstone, Inc., a corporation, or John Smith, the major stockholder of Comerstone, Inc. Perform transaction analysis and calculate total assets, total liabilities, and total stockholders' equity at the end of the period assuming Cornerstone, Inc. began the period with total assets, liabilities, and stockholders' equity of $500,000;$225,000; and $275,000, respectively. 1.Purchased $10,000 of supplies on account 2. Sold $20,000 of goods on account to customers (ignore recording of cost of goods sold and decrease in inventory) 3. Used $1,500 of supplies previously purchased 4. John Smith purchased a $30,000 truck for personal use by paying $10,000 in cash and signing a notes payable for $20,000. 5. Purchased equipment for $20,000 by paying $5,000 in cash and signing a notes payable for the balance. 6. Signed a contract with a cleaning company agreeing to pay $1,000 to clean the company headquarters. The services will be completed next month and payment is due within 30 days of the completed services. 7. Received $15,000 from customers on account