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December 20, 2014

Homework Help: anonymous

Posted by math i have a few questions.hepl pls ty on Tuesday, March 15, 2011 at 12:45am.

1.) an account invested in a month market fund grew from $67,081.20 to $67,359.39 in a month. What was the interest rate, to the nearest tenth?


2.)you are due a tax refund of $760. your tax preparer offers you a no-interest loan to be repaid by your refund check, which will arrive in four weeks. she charges a $60 fee for this service. what actual interest rate will you pay for this loan?


3.)Let y base 1 be the future value after t years of $100 invested at 8% annual simple interest. let y base 2 be the future value after t years of $200 invested at 3% annual simple interest.

a.) think of y base 1 and y base 2 as functions of t and write the rules of these functions.
b.) without graphing, describe the graphs of y base 1 and y base 2.

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