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The minimum monthly water bill in a town is 50.00 and 10 cubic meter is allowed for the charge.There is an extra charge of 20.00 per cubic meter used

beyond the minimum.Express the amount of the bill in pesos as a function of the number cubic meter used beyond the minimum.


Current bill=50 + 20(x-10cubic mtr)...note x= the total volume more than the minimum.
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