Answer:
the second one
Step-by-step explanation:
4y+y = 5y
z+6z = 7z
+8
Answer:
(x) = x + 2
Step-by-step explanation:
Let y = f(x) and rearrange making x the subject
y = x - 2 ( add 2 to both sides )
y + 2 = x
Change y back into terms of x, thus
x = y + 2, so
(x) = x + 2
Your question answer is 16