Question

Water drains from a barrel at a constant rate. The graph and table show how the amount of water in the barrel changes with time.

Which function models this situation?

Answer 1

Option C For sure (as seen above)

Explanation:

I did it on AP3X

Answer 2

Option C is correct.

Explanation:

We have been given the graph

The graph is not of exponential function

Therefore, option A and B are discarded.

Now, We can see the graph is starting from 37

And the difference between Amount of water from the table is 19-22 that is -3

So, the graph is arithmetic

So, applying the formula
`a_n=a+(n-1)d`; d is common difference here we have d= -3

`a(n)=37-3(n-1)`

Therefore, option C is correct.