What three types of information are usually included in the introudiction of a periodic report

The retained earnings account has a credit balance of $24,650 before closing entries are made. if total revenues for the period are $77,700, total expenses are $56,900, and dividends are $13,050, what is the ending balance in the retained earnings account after all closing entries are made?

1. which one of the following would be an example of a supply-side market failure? a. a gas station is slowly leaking diesel fuel from its underground tanks, and after the leak is discovered, the business immediately cleans up the pollution at its own expense. b. a gas station is slowly leaking diesel fuel from its underground tanks, but the state uses taxpayer money to clean up the pollution rather than requiring the business to pay. c. your business wants to attract repeat customers by putting on a customer-appreciation picnic at a public park, but you decide not to because you couldn't prevent noncustomers from consuming the food and entertainment you provided. d. everyone rushes to the local retail outlet at midnight on the day of the release of a new video game console, and the store runs out before everyone is able to buy one.

Winston churchill's stamp collection was valued at $14 million when he died. at auction, it brought in only $4 million. what was it worth? why?