How Much Have I Saved? Portfolio 1) Which option was the least amount invested and what was the investment plan?

2) Which option yielded the highest amount at the end of the 30 years and what was the basis of the plan?

3) What is the difference in the principal invested for the highest and lowest final balances? What is the difference in the interest earned?

4) Is it better to invest more money in the beginning or the end of the 30 years?