for help with graphing logarithms
https://www.youtube.com/watch?v=jS_52xEjT_k
for help with graphing exponentials
http://www.youtube.com/watch?v=xp1TeBfkLPg
https://www.youtube.com/watch?v=jS_52xEjT_k
for help with graphing exponentials
http://www.youtube.com/watch?v=xp1TeBfkLPg