Rate of return Personal Finance Problem Rishi Singh has $700 to invest. His investment counselor suggests that Rishi should buy an investment that pays no interest but will be worth $1,000 after 7 years. a. What average annual rate of return will Rishi earn with this investment? b. Rishi is considering another investment, of equal risk, that eams an annual return of 3.23%. Which investment should he make, and why? a. The annual rate of return Rishi will earn with this investment, r, is \%. (Round to two decimal places.)