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Mathematics 15 Online
OpenStudy (anonymous):

p = $300 r = 7% t = 2 What is i?

OpenStudy (blurbendy):

is there an equation somewhere?

OpenStudy (anonymous):

no thats it

OpenStudy (anonymous):

$4.20 $42.00 $420.00 these are the awnsers

OpenStudy (anonymous):

i didnt understand it either

OpenStudy (goldphenoix):

There is a formula. PRT = I P = Principal R = Interest Rate T = Time (Number of periods)

OpenStudy (goldphenoix):

So plug that in the equation. What would the answer be?

OpenStudy (blurbendy):

nice @GoldPhenoix

OpenStudy (anonymous):

I honestly have no clue

OpenStudy (goldphenoix):

So according to what you have: p = $300 r = 7% t = 2 Correct?

OpenStudy (anonymous):

yea

OpenStudy (goldphenoix):

So we have the formula: PRT = I Just plug it in. Do you know how?

OpenStudy (anonymous):

No this was the first time ive ever done this

OpenStudy (anonymous):

*is

OpenStudy (goldphenoix):

So what's P?

OpenStudy (anonymous):

$300

OpenStudy (goldphenoix):

Great. So if you plug that in, then our equation looks like: (300)RT What's R and T?

OpenStudy (anonymous):

7 2

OpenStudy (goldphenoix):

7% you mean. 7 and 7% is a big difference. So plug that in as well. (300)(7%)(2) Now how would we solve that?

OpenStudy (anonymous):

multiply?

OpenStudy (goldphenoix):

Good job. So what does 300 * 2 give us?

OpenStudy (anonymous):

600

OpenStudy (goldphenoix):

Good. Now what does 600 * 7% give us? If you don't know how to do that, then what is 7% in decimal form?

OpenStudy (anonymous):

0.07

OpenStudy (anonymous):

no

OpenStudy (anonymous):

0.7

OpenStudy (goldphenoix):

Good. So what does 600 * .07 give you?

OpenStudy (goldphenoix):

Nope. .07. ;) .7 is equal to 70%. Keep that in mind. :)

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

42

OpenStudy (goldphenoix):

Good. So the answer is $42. I hope this help! :)

OpenStudy (anonymous):

Ya thank you so much on helping me understand it!

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