50% because you first subtract the original price from the new price so 126-84 equals 42 then you divide that by the original price 84 which will give you .5 which turns to 50%
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I believe it is the first or second choice. I believe it is the first choice, but it could be the second one.
Sorry hope it helps.
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for this problem you would have to find the coordients on the graph and then once you find all the coordients you would attach the lines together which should be a triangle.
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If you need answer's I can pin a picture
Answer: 2145 ²
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