B is correct because when you plug in x=0 into the equation, you get 5.
This means that the y intercept is five.
Here's why the other answer choices are wrong:
The graph is actually INCREASING.
x can be NEGATIVE.
Not all exponential graphs has a y intercept of ONE.
Have an awesome day!
It depends on how fast the water is floating into it.
A Horizontal line means you get a slope of zero
8 hours and 41 mins per day!
(About 9 hours)
Hoped I helped!