Marco Nelson opened a frame shop and completed these transactions:

Sold custom frames and immediately collected $40,000 cash for the sale.

Purchased $70 of office supplies on credit. Paid $1,200 cash for the receptionist's salary.

Sold a custom frame service and collected $1,500 cash on the sale.

Completed framing services and billed the client $200.

What was the balance of the cash account after these transactions were posted?