Suppose you receive $250 for a graduation present, and you deposit it in a savings account. Then each week thereafter, you add $10 to the account but no interest is earned. The amount in the account is a function of the number of weeks that have passed.   Identify the variables in this situation   x=_______      y=________     Find an equation for the amount y you have after x weeks Use your equation to find when you will have $810 in the account.

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