Suppose that the U. S. and European Union (EU) are the only trading partners in the world. If the U. S. lowers import restrictions from the EU, we would expect: a the supply of euros to increase, depreciating the euro. b the demand for euros to increase, appreciating the euro. c the demand for the dollar to increase, appreciating the dollar. d the demand for euros to decrease, depreciating the euro. e the supply of dollars to increase, appreciating the dollar.

Until recently, hamburgers at the city sports arena cost $4.70 each. the food concessionaire sold an average of 13 comma 000 hamburgers on game night. when the price was raised to $5.40, hamburger sales dropped off to an average of 6 comma 000 per night. (a) assuming a linear demand curve, find the price of a hamburger that will maximize the nightly hamburger revenue. (b) if the concessionaire had fixed costs of $1 comma 500 per night and the variable cost is $0.60 per hamburger, find the price of a hamburger that will maximize the nightly hamburger profit.