the price of the commodity increase 8 points, then decrease 13 points. And then increase 9 points. If the commodity price before was X points, which of the following was the commodity price, in point, after the changes?
1. x-5
2. x-4
3. x+4
4. x+5
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the price of the commodity increase 8 points, then decrease 13 points. And then increase 9 points. If the commodity price before was X points, which of the following was the commodity price, in point, after the changes?
1. x-5
2. x-4
3. x+4
4. x+5
X+4
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