Question

The postal service charges $2 to ship packages up to 5 ounces in weight and each additional ounce up to 20 ounces after that they charge $0.15 for each additional ounce What is the domain of this relation

Answer 1

We have to find the domain of this function.

The function represents the charges in function of the weights.

The domain is the set of values of the independent variable (in this case, the weights) for which the function is defined.

In this case, the function is defined for weights greater than or equal to 0.

Then, if x is the weight, the domain is x ≥ 0.