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Mathematics 14 Online
OpenStudy (anonymous):

LaDonna uses $25,000 to purchase a 25 month CD that pays 2.47% compounded monthly. What is her investment worth at the end of 25 months? How much interest did she earn?

OpenStudy (skullpatrol):

What is a "CD?"

OpenStudy (skullpatrol):

@mvesling ?

OpenStudy (anonymous):

certificate of deposit

OpenStudy (skullpatrol):

So after the first month her $25,000 has earned 2.47% of $25,000 interest, right?

OpenStudy (anonymous):

yes

OpenStudy (skullpatrol):

Now that amount of interest gets added on to her original $25,000.to get a new amount. 25000+(0.0247)(25000) <----new amount

OpenStudy (anonymous):

okay so that is what her investment is worth at the end

OpenStudy (anonymous):

?

OpenStudy (skullpatrol):

Take that new amount and take 2.47% of it to find the interest for the second month. You have to do this 25 times to find out the total interest for 25 months.

OpenStudy (anonymous):

I think this would be an easier equation A= 25000(1+.0247/12) ^(25)

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