1. The problem statement, all variables and given/known data A population started at 10,000 in 1900. The population doubles every 50 years. What was the population in 2000? 2. Relevant equations Q(time) = Q(initial)*e(rate)(time) 3. The attempt at a solution I was able to come up with the answer using the standard growth equation, but got the wrong answer with the given equation. Am I doing anything wrong or is the equation not suitable for this problem?