algebra 1 honors

Question

A dog weighs 0.5 pound when it is born.

1. It gains weight as it grows, and is 35 pounds at age 1 year.
2. Then the dog stays the same weight for the rest of its life.
3. It lives to be 15 years old.

What is the domain of the function representing the weight, in pounds, of the dog in terms of its age in years?

Answer 1

This is a graph of age (independent variable), in years, on the horizontal axis, and weight in pounds (dependent variable) on the vertical axis.

Domain = possible horizontal values (of age)

Range = possible vertical values (of weight)

Hence, Domain f(age) = (0, 15)

and Range f(age) = (0.5, 35)