the other? Where both choose to defect? 22. Consider these problems about interest rates. a. a. Using the Rule of 70, at an interest rate of 4%, how long would you estimate it would take for an initial investment of $1000 to be worth at least $2000? b. b. Using the Rule of 70, at an interest rate of 7%, how long would you estimate it would take for an initial investment of $700 to be worth at least $2800? c. C. What is the value of a $250 initial investment, after 10 years, if the interest rate is 2.75%? (State what rate of compounding you are using.) d. d. An initial investment compounds at a rate of 8% over 8 years and is finally worth $8888. What was the initial investment? (State what rate of compounding you are using.) e 23 Consider these problems of growth rates Focus 80 Ne ASUS