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Answer:
first top left graph? 12×4 is 48 so that puts it about right
(13,infinity] hope this helps
To determine if it is a function or not, you can not have a vertical line drawn down the graph touch 2 of the graphed points. That means that you can not have 2 points with the same x value and different Y value. The first set of points satisfies this and is your answer. Hope that helps.
Answer:
i have oily skin (no i dont lol)
Step-by-step explanation: