In Exercise $9,$ you likely compared three investments, and you likely did so by calculating the final values of each. You can also compare them in terms of EAR.

a$.$ Find the EAR for Investment A$.$

b$.$ Find the EAR for Invesiment B$.$

c$.$ Find the EAR for Investment C$.$ Hinc: This will be the rate of interest that after annual compounding for three years will yield $12\mathrm{.}5\%.$ You will need to solve $x^3=1\mathrm{.}125.$