2. Suppose you want to scale the copy back to its original size. What scale factor should you use?

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i think you should think about the question and not look online.

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f(x)=2x^2 -1 

translation is a function transformation that transform the function in a way of translating. by translating the function its graph is moved  up an down. moving the function f(x) 2 units to the left will be the new function g(x) with the equation: g(x)=f(x+2)=2(x+2)^2 -1

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139 divided by a number

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