1. Logarithms
Section 3.7

2. Laws of Logs

3. Logarithm of a product
Example:

4. Match the statement with the log law.

7. Logarithm of a Power
Example:

8. Solve for x:
Check:

9. Check:

10. Solve for x:
Write in exponential form
Check

11. New Law of Logs
Check

12. Logarithm of a Quotient
Example:

13. Write as a single logarithm

15. If 10% of a certain radioactive material decays in 5 days.
What is the half life of the material?

16. Don’t forget to check!!!

17. Homework: Page 176,Investigation 13 Page 178,Focus J
Page 180 , #9,10,11,12,13, (Math 3205) only 15,
Math 3205 only:Page 183, #24,25.
Page 183, #27 *********very important
Math 3205 only:Page 184, #29,30
Math 3205 only:Page 185, #32
Page 203, #33,34,35,36,37,
Page 204, #38,39
Math 3205 only: Page 204,#40,43,
Omit Focus K
End of logs=--Now smile!!!!