Question 1 1 pts 4.4b Solving for n (N). John can purchase a security that will provide a return of 7 percent per year. It will cost $ 2.70 to purchase, and John wants to keep the investment until it grows to a value of $7.25. How many years will it take the investment to grow to $7.25 (round to whole number)? 16 years 15 years 14 years 17 years 19 years