1 You can only upload photos smaller than 5 MB. 2  You can only upload videos smaller than 600MB.  You can only upload a photo (png, jpg, jpeg) or a video (3gp, 3gpp, mp4, mov, avi, mpg, mpeg, rm).
The price to exchange one U.S. dollar for one unit of a foreign currency is called an exchange rate. The exchange rate of the U.S. dollar varies for different foreign currencies, which fluctuate daily based on a number of factors.
How do changes in national interest rates affect a currency's value and exchange ... All other factors being equal, higher interest rates in a country increase the value of that country's currency relative ...urrency valuations are determined by the flows of currency in and out of a country. A high demand for a particular currency usually means that the value of that currency will increase.