Mathematics, 24.04.2020 00:23, ayoismeisalex

The cost for using 12 HCF of water is $37.18, and the cost for using 39 HCF is $81.73. What is the cost for using 30 HCF of water

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The cost for using 12 HCF of water is $37.18, and the cost for using 39 HCF is $81.73. What is the c...