Answer:
0
Step-by-step explanation:
Use the hint lol
Step 1: Plug in -2 into the equation.
f(-2) = 4(-2) + 8
Step 2: Multiply
f(-2) = -8 + 8
Step 3: Add
f(-2) = 0
Let
x---------> the number
we know that
[9+2x]*4=4x+12
36+8x=4x+12
8x-4x=12-36
4x=-24
x=-24/4
x=-6
the answer is
-6
