$15530.00 dollars is invested at 3.2% using simple interest. If the future value is $22487.44, how long was it invested? Round to the nearest tenth of a year.

Using $LaTeX: \displaystyle FV = PV +PVrt \iff FV - PV = PVrt \iff t = \frac{FV - PV}{PVr}$ . Evaluating gives $LaTeX: \displaystyle t = \frac{22487.44-15530}{(15530)(0.032)} = 14.0$ years