Please show your work with the formulas/calculations written out (for example; without using excel tables).

9. If you paid $750 for an investment 25 years ago that is now worth $2000, what was your rate of return?

10. If you save $100 per month, what annual rate of interest must you earn in order to accumulate $10,000 after 10 years?

11. If you borrow $250,000 for 10 years and your monthly payment is $1000, what rate of interest are you paying?

12. If you bought a bond five years ago for $900 which paid annual interest of $250 and sold it today for $950, what was your rate of return?