This video, from VirtualNerd, gives examples of exponential functions.
http://www.virtualnerd.com/algebra-1/exponents-exponential-functions/function-definition.php
Source: http://www.virtualnerd.com/
This video, from Virtual Nerd, shows how to graph an exponential function by plotting points from a table. This does not use transformations.
http://www.virtualnerd.com/algebra-1/exponents-exponential-functions/graphing-with-tables.php
Source: http://www.virtualnerd.com/
This video, from VirtualNed, shows how to identify patterns in data to recognize exponential growth or decay.
Source: http://www.virtualnerd.com/