Mathematics, 09.12.2020 01:00 ctdavis

You are buying decorations for a birthday party. The before-tax total for 3 rolls of crepe paper and 20 balloons is $11.40. After you start decorating, you need more supplies. You buy 2 more rolls of crepe paper and 10 more balloons for $7.20. How much did each roll of crepe paper and each balloon cost?

You are buying decorations for a birthday party. The before-tax total for 3 rolls of crepe paper an

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You are buying decorations for a birthday party. The before-tax total for 3 rolls of crepe paper and...