Earth is unique because it has only one satellite has the largest satellite in the solar system is located outside the asteroid belt is the only known planet to support life

Earth is unique because it is the only planet known to support life.

Compounded interest formula:
A=Pe^(rt), where A is the amount generated after t years at the interest rate r
and e =2.718 a math constant
So in this case P is to be found since A=41,000 is known
Then the equation becomes:
41,000=P(2.718)^(0.023)(17) & you will find that you have to get as a Principal amounting to $1,321