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3. Kaye deposited $6000 into saving account today. For how long can $730 be withdrawn from account at the end of every three months from now if the interest is 3.9% compounded quarterly?

4. Compute the nominal annual rate of interest compounded monthly at which $400 paid at the end of the month for eight years accumulates to $45000 5. What nominal annual rate of interest was charged on a loan of $5600 repaid in end-of -month installments of $121.85 in four and a half years?