You also can invest in a money market mutual fund with a 3.8 percent return and an expense ratio of 0.2 percent. If you plan to keep your investment for 2 years, what annual return must the stock mutual fund earn to exceed an investment in the money market fund? What if your investment horizon is 8 years?
I get how to set it up just cant figure out the rest.
(1 + 0.038 - 0.002)^2 = (1 - 0.045)(1 + R - 0.016)^2
(1+ 0.038 - 0.002)^8 = (1 - 0.045)(1 + R - 0.016)^8