A dolphin is at the surface of the water and then descends to a depth of Error Occurred.. feet. Then the dolphin swims down another Error Occurred.. feet. What is the location of the dolphin relative to the surface of the water?


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The location of the dolphin relative to the surface of the water is feet.



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How are adding and subtracting two rational numbers with different signs related to adding and subtracting two integers with different signs?



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