1. Suppose that, at the beginning of the semester $1.1825 would purchase 1.00 Euro. Suppose, also, that it now takes $1.170 to purchase 1.00 Euro. Also, suppose that at the beginning of the semester, $1.3639 purchased 1.00 while it now takes $1.3454 to purchase 1.00. At the same time, at the start of the semester, the $1 would purchase 101.39 Japanese Yen while $1 will now purchase 106.81 Japanese Yen. Has the U.S. $ gotten stronger or weaker versus each these currencies over the past month? Identify and explain events in the U. S. economy that might cause these exchange rates to change as they have.