6.1-6.2 The Parabola

Part 1:
http://www.youtube.com/watch?v=-1MzoyzWxo4

Part 2 (Focus and Directrix)
http://www.youtube.com/watch?v=04nBaKx9wiM

Part 3 (Focus and Directrix)
http://www.youtube.com/watch?v=z3rUn1Urj4Y&feature=relmfu

Part 4
http://www.youtube.com/watch?v=JNlW406-lmA&feature=relmfu

5.7-5.8 Compound and Simple Interest

http://www.youtube.com/watch?v=B3IdfBcXrLA

5.4/5.5 Log Functions/Properties of Log Functions

Part 1:
http://www.youtube.com/watch?v=pP3NunYYhzk

Part 2:
http://www.youtube.com/watch?v=MmJ5z_ZP1kU&feature=relmfu

More:
http://www.youtube.com/watch?v=AAW7WRFBKdw&feature=relmfu

5.3 Exponential Functions

Solving Equations with exponential functions:
http://www.youtube.com/watch?v=M6f6dANVyxA

This one is a little longer but it covers exponential functions AND logarithmic functions (stuff from 5.4):
http://www.youtube.com/watch?v=5SFL2a_LqZE

5.2 Inverse Functions

http://www.youtube.com/watch?v=Ec5YYVxyq44

5.1 Composite Functions

http://www.youtube.com/watch?v=S4AEZElTPDo