Determination of a public good depends only upon the technical characteristics of the good

If the exchange rate changes from 1.10 euros per dollar to 1.00 euro per dollar, the dollar has

A) depreciated against the euro. B) appreciated against the euro. C) fallen inversely in value. D) appreciated against the dollar. E) depreciated against the dollar.

When the price of one pen is $1, 50 notebooks are demanded. When the price per pen increases to $5, the number of notebooks demanded decreases to 30. What is the cross-price elasticity of demand between the two goods using the arc method?

A) 0.1 B) -0.375 C) 3 D) -3