3. Find the present value of the following ordinary annuities a. $400 per year for 10 years at 10% b. $200 per year for 5 years at 5% c. $400 per year for 5 years at 3%

4. Find the future value of the following ordinary annuities a. $400 per year for 10 years at 10% b. $200 per year for 5 years at 5% c. $400 per year for 5 years at 3%

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