Rate of return Personal Finance Problem Rishi Singh has $3,900 to invest. His investment counselor suggests that Rishi should buy an investment that pays no interest but will be worth $4,700 after 9 years. a. What average annual rate of return will Rishi earn with this investment? b. Rishi is considering another investment, of equal risk, that earns an annual return of 0.09%. Which investment should he make, and why?