What are the Journal Entries for the following transactions: 1. Paid the salaries payable from 2015. 2. Paid $4,800 on May 1, 2016, for one year's lease on the company van in advance. 3. Paid $7,200 on May 2, 2016 for one year's office rent in advance. 4. Purchased $400 of supplies on account. 5. Purchased 100 alarm systems for $28,000 cash during the year. 6. Sold 102 alarm systems for $57,000. All sales were on account. (Compute cost of goods sold using the FIFO cost flow method) 7. Paid $2,100 on accounts payable during the year. 8. Billed $52,000 of monitoring services for the year. 9. Paid installers and other employees a total of $25,000 cash for salaries. 10. Collected $89,000 of accounts receivable during the year. 11. Paid $3,600 of advertising expense during the year. 12. Paid $2,500 of utilities expense for the year. 13. Paid a dividend of $10,000 to the shareholders.