Answer:
1/2x
Step-by-step explanation:

To solve this type of fraction you need to times the inverse of the bottom fractal, both over and under. In this case the inverse of 1/2 is 2/1
You would plug in 4 for x.
f(4)= (4) - 6 = -2
Answer:
first thing to do is get up from your sit and go cry because that question is to hard