### LAST SCRIBE OF THE CYCLE

Today we had one class for today. We started off by writting down notes in our Math Dictionaries.

__The Compound Interest Formula__

A is the amount at theend of the interest period.

P (A.K.A. A_{o}) is the principle amount originally invested.

r is the percent rate of return. Written as a decimal.

n is the number of times the principle is compounded each year.

t is the time in years.

__Interest Compounded Countinuously__

A is the amount at the end of the investment period.

P is the principle amount originally invested.

r is the percent rate of return. Written as a decimal.

t is the time in years.

That was all the notes we had written down. Next, he wrote down some examples then problems.

__Examples__

C_{14} has a half life of 5700 years.

Some bones that have been found only have 10% of C_{14} that they should have. How old are the bones?

A colony of wasps has 800 members. Every 8 days the colony triples in size. How many wasps will there be in the colony in 3 weeks?

There will be 14306.

__Solve__

Radon has a half life of 3.8 days. How much of a 5g sample will remain after 4.2 days?

The population of a colony of pre-cal 40s students grew from 3x10^{5} to 4x10^{5} during the period between noon and 2pm.At what time will the population be at 6x10^{5}?

Well that's all that we did for class today. Now the next scribe will be . . . . . . . ABRIEL muahahahhahahahahah ;D

DON'T FORGET TO DO YOUR HOMEWORK. . PAGE 82 #24-29

thats all folks

## 2 Comments:

Looks like you lost a

there in the first three lines of the last equation that you solved. Do you know how to edit that in? :)tJan that last comment was a good one. So is this Scribe Post. Fix that up and then I can induct you into the Scribe Post Hall Of Fame!

Post a Comment

## Links to this post:

Create a Link

<< Home