1 answer
(click or scroll down)
To determine a dog's age based on a 3-year-old human, we can refer to the information given in the graph. The line on the graph that starts at the origin and passes through the point \((3, 21)\) indicates that a 3-year-old human corresponds to a 21-year-old dog.
Therefore, a 3-year-old human is the same as a **21-year-old dog**.