Question
An adult penguin is searching for food for his chick. The number line shows what is at different levels relative to the surface of the water. What will the adult penguin find if he swims 27 m above where he already is? Choose 1 answer: A Penguin chick B Anchovy C Sardine D Krill
Answer
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Theo
Veteran · Tutor for 12 years
Answer
Step 1: Determine the current depth of the adult penguin.According to the picture details, the adult penguin is currently at -59 meters relative to the surface of the water.Step 2: Calculate the new depth of the adult penguin after swimming 27 meters above its current depth.New depth = Current depth + Change in depthSince the penguin is swimming upwards, the change in depth is negative (because it is moving in the opposite direction of the negative depth).New depth = (-59 meters) + (-27 meters)Step 3: Perform the calculation.New depth = -59 - 27New depth = -86 metersStep 4: Determine what the adult penguin will find at the new depth.According to the picture details, at -86 meters, there is krill.Answer:(D) Krill