Mathematics of Finance

Do you know the following formula?

Formula
P(t)=P_{0}e^{rt}

P(t)
=value at time t
P_0
=original principal sum
r
=nominal annual interest rate
t
=length of time the interest is applied
No, I have not come across this formula
 
I am in need for help for this question, I have attempted the question however I am not sure if this is the correct financial method to use. I would really appreciate if you could let me know whether it is the correct method, if not let me know any other methods that could be used please.
Thank you
Finance - Q5.jpg1587227067456.png
 
I am in need for help for this question, I have attempted the question however I am not sure if this is the correct financial method to use. I would really appreciate if you could let me know whether it is the correct method, if not let me know any other methods that could be used please.
Thank you
View attachment 17992View attachment 17991
Isn't it the same problem discussed in:

 
Isn't it the same problem discussed in:

Yes, but I wasn't sure how to add my working out to my post. So I posted the question again along with my attempt of working this question.
 
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