On january 25, 2009, one u. s. dollar traded on the foreign exchange market for about 0.75 euros. therefore, one euro would have purchased about u. s. dollars.

The general form of the quetion of a circle is ax^2+by^2+cx+dy+e=0 where a=b=0 if the circle has a radius of three units and the center lies on the y axis which set of values of a, b, c, d, and e might correspond to the circle