Awww man the other person answered before me :(
To reflect over the x axis you just multiply the y value by -1 . So your answer is (5,3)
I have done this several times and do not find that x is an integer. I get an imaginary number. Crazy as it seems, here's what I got all 3 times I did this:

. That is definitely NOT an integer!
Answer:
94
Step-by-step explanation:
12x8 is 96, 96-2=94