Answer:
Step-by-step explanation:
n>3
Answer:

Hope This Helps! :) Please give Brainliest if it does!
You can find the numerical part of the answer because it is the same on the right side.
For example:
¹ <<==== Regrouped
89
+
67
---------
146 <<=== I had to press space so I could position it.
So that also happens in subtraction, the left side can be found by doing the same steps in the right column.
For example:
67
- <<=== this time there was no regrouping
12
-------
55
It will take about 16.66 months for the investment to double.
Hope this helps.
it would be 7 lolz dheisns