This question is very oddly worded. The domain is the set of x-values, but this is a set of (x,y) ordered pairs.
I'm reading this question as "Here's a function, { (1,5), (2,1), (-1,-7) }. If this is reflected over the x-axis, what's the range?"
Assuming that is the question that is meant to be asked, reflecting a function over the x-axis will just change the signs of the y-values.
(1,5) -> (1,–5)
(2,1) -> (2,–1)
(-1,-7) -> (-1,+7)
I'd pick the third option.
Answer:
122620.6908
Step-by-step explanation:
Just follow PEMDAS and it's not hard at all.
So we have 52 horses. We know that 12 are white, so:
W : B - 12: x, where x is the unknown amount of horses.
52 - the twelve white horses = 40 other horses.
This means that there are 40 black horses, so the ration of W:B is 12:40. We can simplify this ratio.
The highest common factor of both numbers is 4, so the ratio can be divided by four, giving 3:10.
Therefore the ratio is 3:10.
Hope I helped!
