And if you invest that $100 at 7% that becomes after x years... ,End Balance after x years, 4% per year 10, 1,578.36, 63.13 15, 2,788.81, 111.55 30, 10,

And if you invest that $100 at 7% that becomes after x years... ,End Balance after x years, 4% per year 10, 1,578.36, 63.13 15, 2,788.81, 111.55 30, 10,207.30, 408.29 40, 21,460.96, 858.44