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OpenStudy (anonymous):
You invest $3,000 in an account with an interest rate of 5.5% compounded continuously. How much money would be in the account after 5 years?
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OpenStudy (slaaibak):
3000 * e^nr
jimthompson5910 (jim_thompson5910):
In this case, P = 3000, r =0.055 and t = 5
We're going back to the formula
A = Pe^(rt)
because we're compounding continously
jimthompson5910 (jim_thompson5910):
Plug these values in to get
A = 3000*e^(0.055*5)
OpenStudy (anonymous):
A= 300*e^0.275
jimthompson5910 (jim_thompson5910):
good so far
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OpenStudy (anonymous):
Sorry A=3000*e^0.275
jimthompson5910 (jim_thompson5910):
oh good point, I glossed over that missing zero lol
jimthompson5910 (jim_thompson5910):
but I know what you mean
jimthompson5910 (jim_thompson5910):
so what's next?
OpenStudy (anonymous):
A= 9.04083087??
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jimthompson5910 (jim_thompson5910):
not sure how you're getting that
OpenStudy (anonymous):
I did 3000^0.275
jimthompson5910 (jim_thompson5910):
ah i see now
jimthompson5910 (jim_thompson5910):
it should be 3000*e^0.275
jimthompson5910 (jim_thompson5910):
so you need to compute e^0.275 first
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jimthompson5910 (jim_thompson5910):
the value of 'e' is roughly 2.71828, most likely there will be an 'e' button on your calculator so you won't have to worry about memorizing this
jimthompson5910 (jim_thompson5910):
anyways, e^0.275 = 2.71828^0.275 = 1.316530431
So
3000*e^0.275
turns into
3000*1.316530431
OpenStudy (anonymous):
Oh! I see =) So A= 3950
jimthompson5910 (jim_thompson5910):
exactly
OpenStudy (anonymous):
YES! =)
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jimthompson5910 (jim_thompson5910):
you're on a roll lol
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