Question 444724
1st Update:
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Balance = ({1000[(1+r)^3+(1+r)^2+(1+r)]+1200}[(1+r)^2+(1+r)]+2000)](1+r))
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Balance = [([{1000(1.06)^3+(1.06)^2+(1.06)+1200][(1.06)^2+(1.06)]+2000](1.06) 
= [[3914.62][(1.06)^2+(1.06)]+ etc.
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= 8547.96 + 2000 etc.
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= 10547.96(1.06)
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= $11,180.84 

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Cheers,
Stan H.