C is the independent D is the dependent
You basically work backwards and divide 280 by 7.
So the answer is 40
To start off, the wording of this question is pretty technical. Let's reword the question to make it a bit easier to understand.
From the open interval from -2 to 5 (meaning between but not including those integers), list every integer for x at which x approaches a defined y point on the curve, regardless of whether it actually takes that y value at that point.
Let's start with the first eligible integer, -1.
The limit, from both sides, as x approaches -1 is y=-1.
However, y = -2 at this point.
At 0, x continuous and defined on the curve where you would expect it, and therefore the limit at x=0 is its y value at that point, 0.
x=1 is not eligible, because its left-side limit (when approaching from the left) and right-side limit (when approaching from the right), are distinct.
x=2 has a clear defined limit. It is continuous and defined at that point. The limit looks to be around y= 1.8
x=3 does not feature a clearly defined, finite value, since the limit at x=3 is
-∞
x=4, like x=0 and x=2, has a clear and finite limit, since it is continuous at that point.
Answers are x=-1, x=0, x=2, and x=4
or
{-1, 0, 2, 4}
