Most water tanks have a drain plug so that the tank may be emptied when it's to be moved or repaired. How long it takes a certain size of tank to drain depends on the size of the plug, as shown in the table. Create a model.
$$\begin{array}{|l|c|c|c|c|c|c|c|}
\hline \begin{array}{l}\text { Plug } \\\text { Dia (in.) }\end{array} & \frac{3}{8} & \frac{1}{2} & \frac{3}{4} & 1 & 1 \frac{1}{4} & 1 \frac{1}{2} & 2 \\\hline \begin{array}{l}\text { Drain } \\\text { Time (min.) }\end{array} & 140 & 80 & 35 & 20 & 13 & 10 & 5 \\\hline\end{array}$$