Suppose $300 is invested at 15% compounded yearly, further suppose it accumulates to $603.4 after a number of years. Find the length of time of the investment.
a)
Length of investment = years.

Now suppose $300 is invested at 15% compounded yearly, further suppose it accumulates to $524.7 after a number of years. Find the length of time of the investment.
b)
Length of investment = years.