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Mathematics 18 Online
OpenStudy (howard-wolowitz):

Can someone help me here: I got A

OpenStudy (howard-wolowitz):

Its either A or D

OpenStudy (alexalas):

so it compounds once a year for two years here is the function FV = PV × (1+r)^n where FV = Future Value PV = Present Value r = annual interest rate n = number of periods

OpenStudy (howard-wolowitz):

so 2=7500*(1+4.2%)^n whats N

OpenStudy (alexalas):

2

OpenStudy (howard-wolowitz):

what did you get

OpenStudy (alexalas):

8143.23 hmm thats not right?

OpenStudy (howard-wolowitz):

I got 17,373

OpenStudy (howard-wolowitz):

after rounding

OpenStudy (howard-wolowitz):

what did you do wong

OpenStudy (alexalas):

trying to find out

OpenStudy (alexalas):

hmm where did you get this problem?

OpenStudy (alexalas):

annually means once a year right?

OpenStudy (howard-wolowitz):

yes, it does!

OpenStudy (alexalas):

oh the word continuously changes the formula to x=Pe^(rt), e is the mathematical constant just use 2.7

OpenStudy (alexalas):

still there

OpenStudy (howard-wolowitz):

yes I am

OpenStudy (howard-wolowitz):

wont me to get us help

OpenStudy (alexalas):

I found the correct formula it is x=Pe^(rt) where e= aprox 2.7 r=4.2% and t=2 p=7500

OpenStudy (alexalas):

hello?

OpenStudy (howard-wolowitz):

i am trying to do it, but I cant

OpenStudy (anonymous):

What's the problem, seems alexalas gave you all the information.

OpenStudy (anonymous):

\[x = Pe^{(rt)}\]

OpenStudy (anonymous):

Plug and chug :P

OpenStudy (howard-wolowitz):

ok

OpenStudy (howard-wolowitz):

whats X

OpenStudy (anonymous):

What you're solving for

OpenStudy (howard-wolowitz):

ok

OpenStudy (howard-wolowitz):

@iambatman ok so like this............ x=7500*2.7(4.2 / 2)

OpenStudy (anonymous):

No, it's 4.2% not 4.2

OpenStudy (anonymous):

So what is 4.2% in decimals?

OpenStudy (howard-wolowitz):

0.042

OpenStudy (howard-wolowitz):

@iYuko I CANT SOLVE THISSSSSSSSSSSSSS....HELP MEEEEE @welshfella

OpenStudy (howard-wolowitz):

I just cant get it right

OpenStudy (welshfella):

just plug in the values into P e^(rt) P = 7500, r = 0.042 and t = 2

OpenStudy (howard-wolowitz):

ok hold on one sec and let me try that

OpenStudy (howard-wolowitz):

but I dont Get how to do the rt thing

OpenStudy (howard-wolowitz):

how do you put the r and t in

OpenStudy (welshfella):

enter 7500 * e ( 0.042* 2) =

OpenStudy (welshfella):

- thas using my casio scientific calculator

OpenStudy (howard-wolowitz):

ok Im doing that now

OpenStudy (welshfella):

i press the e^x button

OpenStudy (howard-wolowitz):

I got 1712.51755

OpenStudy (welshfella):

no afraid not it should come to over 8000

OpenStudy (welshfella):

the exponential function e appears as this on most calucators

OpenStudy (welshfella):

|dw:1430245320665:dw|

OpenStudy (howard-wolowitz):

well crap

OpenStudy (welshfella):

follow this by (0.042*2) dont forget the parentheses

OpenStudy (howard-wolowitz):

im getting 17,373

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