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.

Answer 1

Answer:

Option C is correct.

Step-by-step 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.