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Mathematics, 23.09.2019 17:30 genyjoannerubiera

Michael started a savings account with $300 . after 4 weeks , he had $350 dollars and after 9 weeks he had $400 . what is the rate of change of money in his savings account per week ?

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Michael started a savings account with $300 . after 4 weeks , he had $350 dollars and after 9 weeks...
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