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Select the set of equations that represents the following situation: Mike invested $706 for one year. He invested part of it at 5% and the rest at 3%. At the end of the year he earned $28.00 in interest. How much did Mike invest at each rate of interest?

  • algebra -

    I don't see a set of equations...

  • algebra -

    Select the set of equations that represents the following situation: The cost of eleven CDs and twelve DVDs is $150.62; and the cost of one DVDs and twelve CDs is $116.07. How much do a CD and a DVD cost?
    (Points : 3)
    11x + 12y = 150.62; 12x + 1y = 116.07
    11x • 12y = 150.62; 12x • 1y = 116.07
    11x + 12y = 150.62; 1x + 12y = 116.07
    11x • 12y = 150.62; 1x • 12y = 116.07

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