Answer:
A
Step-by-step explanation:
12 years, 10 months
9) -4x+y+6z
10) 8x^2-x-2
I don't know what's happening, but thanks for free points. :)))
f(x)=-4-x
A. f(-2)=-4-(-2)=-4+2=-2
<em>f(-2)=-2</em>
B. f(x)=8
-4-x=8 /+4
-x=12 /*(-1)
x=-12