Question

The owners of a recreation area filled a small pond with water in 140 minutes. The pond already had some water at the beginning. The graph shows the amount of water (in liters) in the pond versus time (in minutes).Find the range and the domain of the function shown.

Answer 1

The domain of a function is all values of x the function can assume.

Looking at the graph, the values of x are between 0 and 140 (including both), so the domain is:

$0\le x\le140$

The range of a function is all values of y the function can assume.

Looking at the graph, the values of y are between 300 and 1350 (including both), so the range is:

$300\le y\le1350$