Hi fellow people,
So here is my equation y=x/x^2-4
I already factored out the denominator to equal x/ (x+2)(x-2).
The domain would be all real number except 2, and -2 as they are zeros right?
Could I just right All Real Numbers x doesn't equal 2,-2
or do I have to write it in Interval notation (-infinity, -2) U (-2,2) U (2, infinity)
Im pretty sure their both the same thing so could I just right the previous on my homework?

25 ! the line of best fit is h = 5a + 86. predict the height at age 16. show your work.

You were told that the amount of time lapsed between consecutive trades on the new york stock exchange followed a normal distribution with a mean of 15 seconds. you were also told that the probability that the time lapsed between two consecutive trades to fall between 16 to 17 seconds was 13%. the probability that the time lapsed between two consecutive trades would fall below 13 seconds was 7%. what is the probability that the time lapsed between two consecutive trades will be between 14 and 15 seconds?

What numbers are included in the set of integers? what numbers are not included?