Question

problem 7
charlie filled up the tub and gave the family dog a bath. then
charlie let the water in the tub drain.
the graph shows the volume of water in the tub, in gallons, as a
function of time, in minutes.
at what rate did the faucet fill the tub?

gallons per minute

Explanation:

Step1: Identify fill data points

At $t=0$ minutes, volume $V=0$ gallons; at $t=8$ minutes, $V=24$ gallons.

Step2: Calculate fill rate

Rate = $\frac{\text{Total Volume}}{\text{Total Time}}$
$\text{Rate} = \frac{24}{8}$

Answer:

3 gallons per minute