To determine a dog's age based on a 3-year-old human, we need to look at the common understanding that a dog's age is often considered to be approximately 7 times that of a human’s age for many years. However, more accurate models suggest that the first couple of years of a dog's life count more than subsequent years.
Typically, the first year of a dog's life is roughly equivalent to 15 human years, the second year is about another 9 human years, and each year afterwards is approximately 5 human years.
For a 3-year-old human:
- The first year of the dog = 15 human years.
- The second year of the dog = 9 human years.
- The third year of the dog = 5 human years.
So, a 3-year-old dog is considered to be approximately:
- 15 + 9 + 5 = 29 human years old.
However, to find the dog’s age equivalent that is given a human age of 3, we might also want to express this as a proportion based on the specific graph you mentioned, which we don't have access to.
If the relationship you're looking for is strictly 1 to 7 (which is a general rule of thumb), then for a 3-year-old human:
- A simple proportional calculation gives us:
\[ \text{Dog's age} = \text{Human's age} \times 7 = 3 \times 7 = 21 \text{ dog years}. \]
Thus, if using the simplified rule, a 3-year-old human is approximately the same as a 21-year-old dog.
Therefore, the answer would be:
A 3-year-old human is the same as a 21-year-old dog.
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