Solve this equation using arithmetics and everyday language only

You don’t find it trivial to convert between ln and log10? or you don’t think it’s convention? if it is trivial, what would preference one over the other?

image

Honestly e is actually a financial number… so any of you in finances should be familiar with e.

It’s basically the number you get when you have interest that is compounded infinitely…

not particularly.

e appears in many problems that approach an asymptotic limit.