The number of gallons of water in the bathtub is a function of time. Therefore, it is true.
<h3>How to illustrate the graph?</h3>
The graph shows a curve that lets you find the number of gallons of water given any value of t betweeh 0 and 30 plus.
Hence, the number of gallons of time indeed is a function of time, in the interval shown by the graph.
The answer is true, because each t value is paired with exactly one number of gallons".
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