Yes, the graph is a function and it does pass the vertical line test because when you hold a ruler up to it, you can see that the graph only hits one point at a time.(im not so sure about this, im sorry :/ )
Yes, your range is 2, since that is your y-intercept.
And your other answer choices are incorrect.
I believe the answer is
7x^3-2x^2-5
It should take Gwen 6 hours for her to finish her book.
1/4 divided by 1 1/2 is 1/6
We can model this situation with a linear equation. We know for our problem that the initial point is (0, 25), and the next point is (10, 108.4). To relate those points and find the slope of our linear equation, we are going to use the formula:

. Notice that we know from our points that:

,

,

, and

. So, lets replace those values in our formula to find

:



Now that we have the slope of our linear equation, we can use the point slope formula:

to complete our linear equation:



Or in function notation:

We can conclude that the equation that matches this situation is

.