exam Maths Puzzle Numerical Ability

-3(x-2)=x

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exam Other Question

An open rectangular gutter is made by turning up the sides of a piece of metal 20 in. wide. The area of the cross-section of the gutter is 50 in.^2. Find the depth of the gutter. I NEED AN EXAMPLE OF A REAL LIFE APPLICATION OF A QUADRATIC FUNCTION. USE OTHER VARIABLES BESIDE X AND Y.

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