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July 31, 2014

Homework Help: Algebra

Posted by sherry on Thursday, March 22, 2012 at 1:02pm.

Select the set of equations that represents the following situation: Mike invested $434 for one year.He invested part of it at 9% and the rest at 10%.At the end of the tear he earned $40.16 in interest.How much did Mike invest at each rate of interest.?
a).x+y=434;9x+10y=40.16
b.)0.09+0.10y=$434;x+y=40.16
c.)x=y=434*0.09x+0.10y
0.09*434+0.10=434=40.16

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