Tyrone's boss said that he can come and work for an extra 3 hours this afternoon, but it is optional. Tyrone decided to go to the beach instead. Assuming he makes $14 an hour (after taxes) and his trip to the beach costs him $10 in gas and toll, how much is his opportunity cost to go to the beach?

Andrea cujoli is a currency speculator who enjoys "betting" on changes in the foreign currency exchange market. currently the spot price for the japanese yen is ¥129.87/$ and the 6-month forward rate is ¥128.53/$. andrea would earn a higher rate of return by buying yen and a forward contract than if she had invested her money in 6-month us treasury securities at an annual rate of 2.50%. true/false?