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A starfish is attached to a rock 3 inches below the level of the water at high tide. At low tide, the starfish is 1 inch above the level o the water. Which relationship shows the starfish' position, in relation to the level of the water, at high tide compared with its position at low tide?

A 3 to 1
B 3 to 4
C -3 to 4
D -3 to 1

Respuesta :

The correct answer is D, -3 to 1.

At high tide the starfish is 3 inches below the surface, or -3.
At low tide the starfish is 1 inch above the surface, or +1.

The ratio of high to low tide is then -3 to 1.

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