Question 1164435
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It is strange to me to see this post.


I used to think that a Math problem is a compact text not more than 5 lines of a standard width.


What I see here, is much more.


Is it a dissertation or some Master's degree thesis/foliant ?



Let me tell you honestly, that rare tutor (if any) will read it in whole, from the beginning to the end.


Me personally definitely will not.


But, nevertheless, to be in help, let me notice that the part (the formula and calculations) related to a two-year 

investment compounded quarterly at 9% per year is INCORRECT.


To learn this subject, look into my lesson

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=https://www.algebra.com/algebra/homework/percentage/lessons/Compound-interest-percentage-problem.lesson>Compound interest percentage problems</A> 

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=https://www.algebra.com/algebra/homework/logarithm/Problems-on-discretely-compound-accounts.lesson>Problems on discretely compound accounts</A> 

in this site, and learn the subject from there.



Good luck.


My advise to you is to change your writing style, if you want to get help from this forum/site.



To change to what ? --- To a standard style writing Math problems . . . 


Are you familiar with it ?


If not, explore any textbook on the School Math.



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And one more advise of great importance : No more than one problem per post, please.


It is the RULE, the POLICY and the REQUIREMENT of this forum.


Those who violate it, work against their own interests.



Have a nice day (!)