Question

To measure how much gasoline she uses on her road trip , Hortense makes a graph that shows the amount remaining in the tank as a function of the miles she has driven ( see figure ) .

Answer 1

It is important to know that the domain set is formed by all the x-values shown by the graph.

Having said that, the domain of the given graph is from 0 to 400, positive real numbers.

Hence, the answer is B.