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?
2 gallons per minute
edit my response

Explanation:

Step1: Identify fill time and volume

The tub fills to 24 gallons in 6 minutes (from time 0 to 6 minutes on the graph).

Step2: Calculate fill rate

Rate = $\frac{\text{Total Volume}}{\text{Time to Fill}}$
$\text{Rate} = \frac{24}{6}$

Answer:

4 gallons per minute