**Task 1:** If a dog is 12 years old, how old is the dog according to each of these formulas?
**Task 2:** Represent the different formulas on a single graph (dog's age vs. human's age). Is there a single point where all agree? Also, which seems the most realistic? Explain.

**Task 3:** The oldest recorded age for a dog is 27 years. How old would this be in human years using each of the formulas?

If you are curious, a common formula for cats is their year one equates to 15 human years, year two equates to 10 more human years, and four human years for each cat year thereafter.

**Task 4:** The oldest recorded age for a cat is 34 years. How old would this be in human years?

And, for the horse lovers, a common formula for horses is that their year one equates to 6 human years, year two is equates to 5 more human years, year three equates to four more human years, year four equates to three more human years, and the 2.5 human years for each horse year thereafter.

**Task 5:** The oldest recorded age for a horse is 62 years. How old would this be in human years?