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Mathematics 8 Online
OpenStudy (anonymous):

the interest (in dollars) paid on a $10,000 debt over 3 years when the interest rate is r% can be approximated by the equation I/175.393 + 0.663=r. If the credit card interest rate is 19.9% find the amount of interest paid during the 3 years in dollars

OpenStudy (tkhunny):

What an odd question. Shall we use the approximation or not?

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