Question

.

Answer 1

@Michele_Laino

Answer 2

first question:
I don't know the answer, since I'm not good with financial mathematics

Answer 3

question #2
we have to compute this:
\[\huge {\log _{10}}\left( {{4^7}} \right) = {\log _{10}}16384\]
then, please rewrite the left side by means of this rule:
\[\huge {\log _{10}}\left( {{x^k}} \right) = k{\log _{10}}x\]

Answer 4

Question #3:
here we can rewrite such expression as below:
\[\huge {\log _6}\left( {\frac{1}{{36}}} \right) = - {\log _6}36\]
now, please rewrite the right side, recalling that \(36=6^2\), and subsequently, please use the property of the question #2, namely:
\[\huge {\log _6}\left( {{x^k}} \right) = k{\log _6}x\]