The blank would be 4 as 4*7 is the same as 7*4
Answer:

Step-by-step explanation:

To do this, you must substitute
for x in the equation g(x)

Simplified this would be

Answer:
-3<x<3
Step-by-step explanation:
let y=0
0=x^2-9
0=(x+3)(x-3)
x=-3 and x=+3
Y=x-3 and Y=1/2x-3/2 and that is ur answer