Since the limit of f(x) is non-zero, the limit distributes over the quotient and

Area of a rectangle is length * width. So we find the factors of 250 that together have a ratio of 5:2.
Your answer is 25 inches in length and 10 inches in width. Divide each dimension by 5, you get your ratio.
B is the function because all of the x values are different.
You’re taking about comparison, so there isn’t a definite answer. The answer is undefined or N/A