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A 5 inch by 7 inch picture is placed in a frame that creates a uniform border of x inches around the picture. The area of the entire frame(including where the picture is placed) is equal to 120 square inches. Write an equation in terms of x that models the situation.

 Aug 3, 2020
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(2x+7)(2x+5) = 120          would be one way.....you can multiply the l side to get

 

4x2 +24x - 85 = 0

 Aug 3, 2020

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