# math

posted by
**Hannah**
.

1) initial investment = $600

annual % rate = ?

time to double = ?

amount after 10 years = $19,205.00

19,205 = 600e^(10r)

I do not know how to solve for r of find the time to double.

posted by
**Hannah**
.

1) initial investment = $600

annual % rate = ?

time to double = ?

amount after 10 years = $19,205.00

19,205 = 600e^(10r)

I do not know how to solve for r of find the time to double.