Question

The following table shows the amount of water in a tank after a plug is pulled.How much water is leaking out the tank each second?-7 gallons per second-4 gallons per second-5 gallons per second-9 gallons per second

Answer 1

This problem is asking for the ratio of change.

To find the ratio, we have to use two pairs: (3, 223) and (9, 193).

Then, we use the following formula.

`r=(y_2-y_1)/(x_2-x_1)`

Where,

`\begin{gathered} x_1=3 \\ x_2=9 \\ y_1=223 \\ y_2=193 \end{gathered}`

We replace these coordinates.

`r=(193-223)/(9-3)=(-30)/(6)=-5`

Therefore, the water is leaking out 5 gallons per second.

The right answer is C.