Answer:
8 hours.
Step-by-step explanation:
The initial water level is 24.8 meters, and the rate of water level drop is 2 meters/ hour, that means after 
hours the water level 
will be
Now we want water level to be 8.8 meters, I.e 
, therefore, we have:
we solve the equation for :
it will take 8 hours for the water level to drop to 8.8 meters.
Point A shows that she is incorrect.
With functions, you can perform the "straight line test through each point. If the line goes through both points, you know it's not a function.
If we plotted point A, it'd fail the straight line test because the given point (-6, 7) already has -6 as an x value.
Hope this helps!
