On January 1, 2009, Bill has $1100 and Curtis has $2000. On January 1, 2010, Bill has $1210 and Curtis has $3000. Be sure that you've also answered questions 3 and 4 and explained clearly how you came up with your answers.

If your answers **don't** match ours,

- did you understand that on January 1, 2009 Curtis has just buried another $1000 the day before on December 31, 2008?
- did you remember that each year Bill earns 10% of his current account value, not just another 10% of the original $1000?
- did you understand that if x is the number of years after January 1, 2008, then x = 1 in 2009, x = 2 in 2010, and so on?
- did you try making a chart to look for patterns in how much money each man has each year?
- did you try graphing your expressions or equations?
- did you check your math?

If any of those ideas helps you, you might revise your answer, and then leave a comment that tells us what you did. If you're still stuck, leave a comment that tells us where you think you need help.

If your answer **does** match ours,

- did you use algebraic techniques to find your answer?
- did you show and explained the work you did?
- is your explanation clear and complete? Would another student understand your solution?
- did you make any mistakes along the way? If so, how did you find and fix them?
- are there any hints that you would give another student?
- did you try the extra?

*Revise* your work if you have any ideas to add. Otherwise leave us a *comment* that tells us how you think you did - you might answer one or more of the questions above.