At the end of each problem provide a short,?written explanation of your work explaining how you arrived at your solution(s);?and why you chose the steps/method

At the end of each problem provide a short, written explanation of your work explaining how you arrived at your solution(s); and why you chose the steps/method used to solve the problem, etc.    Please do not forget to state the directions for each problem that you complete.

Please submit the work as a PDF