### Online College Courses for Credit

#### FREE EDUCATIONAL RESOURCES PROVIDED by SOPHIA

##### Are you a student?
Free Professional Development
• > Mathematics
• > Applications of Formulas for Logarithmic and Exponential Functions
+

# Applications of Formulas for Logarithmic and Exponential Functions

##### Rating:
(2)
• (1)
• (1)
• (0)
• (0)
• (0)
Author: Shirley Beil

Sophia’s self-paced online courses are a great way to save time and money as you earn credits eligible for transfer to many different colleges and universities.*

No credit card required

29 Sophia partners guarantee credit transfer.

311 Institutions have accepted or given pre-approval for credit transfer.

* The American Council on Education's College Credit Recommendation Service (ACE Credit®) has evaluated and recommended college credit for 27 of Sophia’s online courses. Many different colleges and universities consider ACE CREDIT recommendations in determining the applicability to their course and degree programs.

Tutorial

The following video will be available with closed captioning at:

http://youtu.be/nhSYnT9CEeE

## Applying Two Forms of the Exponential Growth Formula

The following video will be available with closed captioning at:

http://youtu.be/LagESHrsUgs

## Using the Radioactive Decay Formula

The following video will be available with closed captioning at:

http://youtu.be/bWvXwvWIIFU

## Newton's Law of Cooling

The time limit was up before I finished the last example. However, I left the work to the viewer and said that I would give the answer here. The answer is that the turkey will cool to 100 degrees after approx 1 and 2/3 hour (2 hours if rounded to nearest hour.)

The following video will be available with closed captioning at:

http://youtu.be/qopAUxkrA_o

## pH

At the end, I read 3.2 *10 ^ -7 as "3.2 times 10 to the minus 7th". I should have said, "3.2 times 10 to the minus 7".

The following video will be available with closed captioning at:

http://youtu.be/ev7_lZEpNIA