Answer Happy

Please answer True or False. Thank you!
5. Producing a soccer ball costs Jake $15. He sells it to Darby for $35. Darby values the soccer ball at $40. For this transaction, the total surplus in the market is $20. 6. The demand for gasoline will respond more to a change in price over a period of five weeks than over a period of five years. 7. A good that is excludable but not rival is known as a public good. 8. The imposition of a tariff on imported wine will increase the domestic price of wine, decrease the quantity of wine imported, and increase the quantity of wine produced domestically.