Mike started a savings account by depositing $9. Each month, he deposits more money than the month before. At the end of 41 months, he has saved $9,389.00. How much more does he deposit each month?

Answer 1

All kinds of missing information:

- how much more each month does he deposit ?
- are the increases each month the same amount?
- does he not get any interest in his savings account? (if not, he might as well put each month's deposit in a sock under his bed, at least he won't get hit with any service charges )

Answer 2

it 11