You are graduating from college at the end of this semester and after reading the The Business of Life box in this​ chapter, you have decided to invest
​$4,000 at the end of each year into a Roth IRA for the next 45 years. If you earn 7 percent compounded annually on your​ investment, how much will you have when you retire in
45 ​years? How much will you have if you wait 10 years before beginning to save and only make 35 payments into your retirement​ account?