Solve the problem using graphical approximation techniques on a graphing calculator. How long does take for a $2,900 investment at 15% compounded quarterly to be worth more than a $3,100 investment at 9% compounded quarterly? Identify the formula required to solve this problem. A. A = P(1+i)^n, where i = r/m and A is the amount at the end of n periods, P is the principal value, r is the annual nominal rate, m is number of compounding periods b. I = Prt, where i = compounding periods m O B. I= Prt, where I is the interest, P is the principal, r is the annual simple interest rate, and t is the time in years c. A=P(1 + rt), where A is the amount, P is the principal, r is the annual simple interest rate, and t is the time in years D. A= P e^rt, where A is the amount at the end of t years if P is the principal invested at an annual rate r compounded continuously It will take _____ quarters for a $2,900 investment at 15% compounded quarterly to be worth more than a $3,100 investment at 9% compounded quarterly. (Round up to the nearest integer.)