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03-11-2016
Mathematics

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Wave erosion can cause a coastline to recede at a rate of a few centimeters each year. Suppose a beach recedes 2 centimeters each year. In four years, how many centimeters will the beach recede?

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kingburrito kingburrito

03-11-2016

You have Years thats your Y and over the course of 2cm each year. 2y. x is the total beach erosion.
over four years the beach will reside: x = 2(4) so a total of 8 CM.

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