3 را (x) = 2x+7 cl if -5 ²x C1 X = 1 8 If 12X=3 7 11x-2 31 if x > 3 A) use 3-step formula B) is f differentiate at v=3 If

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A:

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A: I am attaching image so that you understand each and every step.

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A: Please refer to the image below

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A: Since you have asked multiple questions in a single request we would be answering only the first…