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Mathematics 22 Online
OpenStudy (anonymous):

@calculusxy @soccerman Melanie has a balance of $1700 on a credit card with an APR of 24.2%, compounded monthly. About how much will she save in interest over the course of a year if she transfers her balance to a credit card with an APR of 10.8%, compounded monthly? (Assume that Melanie will make no payments or new purchases during the year and ignore any possible late payment fees.) A. $152.51 B. $202.61 C. $267.28 D. $314.28

OpenStudy (mindblast3r):

c 100%

OpenStudy (mindblast3r):

Put this on google calculator, a) 1700(1+0.242/12)^12 b) 2160.24232467 c) 1700(1+0.108/12)^12 d) 1892.96644743 e) 2160.24232467 - 1892.96644743 f) 267.27587724 g) $267.28 (rounded)

OpenStudy (mindblast3r):

Medal please.

OpenStudy (calculusxy):

A

OpenStudy (mindblast3r):

(S)he's wrong. I provided proof with my answer.

OpenStudy (mindblast3r):

All the question is asking is to add up the interest over the course of the year by both, then subtract the higher interest by the lower interest.

OpenStudy (mindblast3r):

In my equation I did this.

OpenStudy (mindblast3r):

When you do this, you get the amount of money saved.

OpenStudy (anonymous):

257.28

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