Question

Multiple Representations  A robotic submarine dives to a depth of 24 comma 673 ft below sea level. If 0 represents sea​ level, what rational number represents the​ submarine's position? If 0 represents the ocean​ floor, 28 comma 970 ft below sea​ level, what rational number represents the​ submarine's position?
Use pencil and paper. Draw a picture that represents the elevation of the submarine if 0 represents sea level. Then draw a second picture that represents the elevation of the submarine if 0 represents the ocean floor.
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Part 1
Write the depth of the submarine as a rational number when 0 represents sea level.
  
enter your response here ft

Answer 1

Part 1 (0 = sea level): -24,673 ft.

Part 2 (0 = ocean floor at 28,970 ft below sea level): +4,297 ft (the submarine is 4,297 ft above the ocean floor).

Sketch descriptions you can draw on paper:
- Picture 1: a vertical number line with 0 at sea level and numbers decreasing downward; mark the submarine at -24,673.
- Picture 2: a vertical number line with 0 at the ocean floor, mark the submarine 4,297 units above 0; sea level would be at +28,970 on this line.