EXPONENTIAL GROWTH and DECAY -
https://drive.google.com/file/d/0B_ivyYf52I61MjdjNGVjZDEtNDg4Yy00MWU1LWI2YjUtMTU2OWQ1ZDYyNDI1/edit?usp=sharing
https://drive.google.com/file/d/0B_ivyYf52I61MjdjNGVjZDEtNDg4Yy00MWU1LWI2YjUtMTU2OWQ1ZDYyNDI1/edit?usp=sharing