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Mathematics 21 Online
OpenStudy (anonymous):

jgtfgkhf

OpenStudy (anonymous):

@campbell_st

OpenStudy (anonymous):

@SolomonZelman @tkhunny @amistre64

OpenStudy (tkhunny):

Please show your work. If you REALLY have no idea how to proceed, you should be in a different class or your teacher is a sadist. Show your work! Anything. Throw us a bone we can work with.

OpenStudy (anonymous):

i dont have any work. i havent done this for two years and they want us to review so ive forgotten all of it.

OpenStudy (tkhunny):

That's really an inadequate response. Why are you in this class? Exponential Growth usually looks like this: \(A(t) = A_{0}e^{kt}\) We're starting in the year 2000 with 12.7 million. Now, we have: \(A(0) = A_{0}e^{k(0)} = 12.7 \rightarrow A_{0} = 12.7\) We have 15 million in 2020 (20 years later). Now, we have: \(A(20) = 12.7e^{k(20)} = 15 \rightarrow k = 0.0083224\) And there is the model for Part 1. Back up to that last step and reproduce the process for Part 2.

OpenStudy (anonymous):

how did you do that last step?

OpenStudy (tkhunny):

Logarithms. You must be familiar with logarithms. you may need more review on this process.

OpenStudy (anonymous):

ok thanks

OpenStudy (anonymous):

i got it. the second one is 12.e^(.002t). thanks

OpenStudy (tkhunny):

I get 0.002219309. Good work!

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