Suppose you owe $$1,000$ on a loan and the interest rate you are charged is $20\%$ per year compounded annually. If you didn't pay anything off, at this interest rate, how many years would it take for the amount you owe to double?

Suppose you owe $$1,000$ on a loan and the interest rate you are charged is $20\%$ per year compounded annually. If you didn't pay anything off, at this interest rate, how many years would it take for the amount you owe to double?

Less than $2$ years

$5$ to $9$ years

$2$ to $4$ years

I don't know.

$10$ or more years