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Posted by melanie on Wednesday, January 2, 2013 at 9:17pm.

at the beginning of the summer, conan had $180 in the bank. each week he deposits another $64 that he earns mowing lawns. is his account balance proportional to the number of week since he started mowing lawns?

no, because the initial 180 gets in the way. The amount added is proportional, but not the whole amount.

Its not because he already had money in his account

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