Answer: To determine if Ken stayed at the club for at least 2 years based on him spending $730, we need additional information. The amount of money Ken spent alone does not provide enough context to make a conclusive determination about the duration of his stay.
If we have information about the cost of staying at the club for a certain period of time, we can compare that cost to the amount Ken spent to assess the duration of his stay. Without this information, it is not possible to determine if Ken stayed at the club for at least 2 years based solely on the amount of money he spent.
To provide a more accurate answer, it would be helpful to know the cost of staying at the club and any relevant details about the payment frequency (e.g., daily, monthly, yearly).