real life problem involving linear function..  i was ask to give five.. i already made four but i still need one more.. thanks for those who will lend a hand.. ^.^

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embizze | High School Teacher | (Level 1) Educator Emeritus

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The water company charges an initial fee of $40, which covers the first 4000 gallons, and $.005 per gallon beyond that.

The monthly charge would be C=.005(x-4000)+40 or C=.005x+20 where x is the number of gallons.

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