The graph shows the mass, in kilograms, of Jeff’s pet Atlantic cod, given its age in years.
What is the age of the cod when its mass is 15 kg?
, 2013
Pick one
Solution
A mass of 15 kg is halfway between 10 kg and 20 kg on the vertical axis.
The point where the graph reaches 15 kg is halfway between 6 and 8 on the horizontal axis.
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Therefore, the cod is 7 years old when its mass is 15 kg.
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