Credit Card Payoff: Mathematical and Programming approach

Credit cards may set a minimum monthly payment - or floor - but paying the minimum each month does not guarantee that you are going to go debt free anytime soon, so how much should you pay in a monthly basis in order to payoff your credit card after $n$ months?

Here, we provide two methods to answer this question:

Approach	Method
Mathematical	Geometric series
Programming	Bisection search

This exercise is a neat example of approaching a problem from different, although related, disciplines.

Requirements

Matplotlib is required to replicate the plot shown on the jupiter notebook. You may install it through python -m pip install matplotlib or by running python -m pip install -r requirements.txt.

This exercise was inspired by one of the assingments from MITx's Introduction to Computer Science and Programming Using Python.