Answer:
since there are no columns, I will write it down:
1. Stockholders invest $90,000 cash to start the business.
Cash increases by 90,000
Common stock increases by 90,000
2. Purchased three digital copy machines for $400,000, paying $100,000 cash and signing a 5-year, 6% note for the remainder.
Copy machines increases by 400,000
Cash decreases by 100,000
Notes payable increases by 300,000
3. Purchased $5,000 paper supplies on credit.
Supplies increases by 5,000
Accounts payable increases by 5,000
4. Cash received for photocopy services amounted to $7,000.
Cash increases by 7,000
Service revenue increases by 7,000
5. Paid $500 cash for radio advertising.
Advertising expense increases by 500
Cash decreases by 500
6. Paid $800 on account for paper supplies purchased in transaction 3.
Cash decreases by 800
Accounts payable decreases by 800
7. Dividends of $1,500 were paid to stockholders.
Dividends increase by 1,500
Cash decreases by 1,500
8. Paid $1,200 cash for rent for the current month.
Rent expenses increases by 1,200
Cash decreases by 1,200
9. Received $2,000 cash advance from a customer for future copying.
Cash increases by 2,000
Unearned revenue increases by 2,000
10. Billed a customer for $450 for photocopy services completed
Accounts receivable increases by 450
Service revenue increases by 450