Mathematics, 19.10.2019 17:20, 21marmong

The elevation of city a is 72 feet above sea level; the elevation of city c is 24 feet above sea level. the elevation of city d is of the elevation of city c.
part a: write an expression to represent the elevation, in feet, of city d.
part b: simplify the expression and explain why the answer is negative or positive.

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The elevation of city a is 72 feet above sea level; the elevation of city c is 24 feet above sea le...