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Read this word problem.\newlineA dolphin was swimming 77 meters below the surface of the ocean. It located a squid and dove down 44 more meters to eat it. What is the location of the dolphin now relative to the surface?\newlineTo solve the problem, Lamar subtracted 7(4)-7 - (-4) and came up with an answer of 3-3 meters. Is Lamar correct? Why or why not?\newlineChoices:\newline(A) Yes, Lamar is correct.\newline(B) No. The answer should have been 1111 meters, not 3-3 meters, because the sum of the absolute values of the numbers is 1111.\newline(C) No. Lamar should have subtracted 74-7 - 4 because the dolphin started 77 meters below the surface and dove down 44 more meters.

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Q. Read this word problem.\newlineA dolphin was swimming 77 meters below the surface of the ocean. It located a squid and dove down 44 more meters to eat it. What is the location of the dolphin now relative to the surface?\newlineTo solve the problem, Lamar subtracted 7(4)-7 - (-4) and came up with an answer of 3-3 meters. Is Lamar correct? Why or why not?\newlineChoices:\newline(A) Yes, Lamar is correct.\newline(B) No. The answer should have been 1111 meters, not 3-3 meters, because the sum of the absolute values of the numbers is 1111.\newline(C) No. Lamar should have subtracted 74-7 - 4 because the dolphin started 77 meters below the surface and dove down 44 more meters.
  1. Start Depth: The dolphin starts 77 meters below the surface, so we start with 7-7 meters.
  2. Diving Down: Diving down 44 more meters means going 44 meters further below the surface, so we add 4-4 meters to 7-7 meters.
  3. Calculation: Calculating 7+(4)-7 + (-4) gives us 74=11-7 - 4 = -11 meters.
  4. Explanation: Lamar's calculation of 7(4)=3-7 - (-4) = -3 meters is incorrect because subtracting a negative is like adding a positive.

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