State the Most Applicable Accounting Rule for Each of the Following

Essay

State the most applicable accounting rule for each of the following situations.An accounting rule can be a principle,assumption,constraint,or information characteristic.
1.All purchases and expenses are recorded at the amount paid.
2.South Seas records items imported from Tahiti in U.S.dollars.
3.The owner intends to run South Seas for an indefinite period of time.
4.Jem's Jewelers sold a $5,000 diamond engagement ring on account and recorded it as a sale.
5.Inventory purchased last month and sold this month was deducted as a cost on this month's income statement.