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Valentina mailed a package and a card to her pen pal each month. Stamps for each package cost $2.15 and for each card cost $0.49. How much money did Valentina spend in 6 months?
She spent $15.84
$2.15+$0.49=2.64x6=$15.84.
Yeah, you can use the equation: "2.64x". Where x = the # of months.
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