Answer:
function
Step-by-step explanation:
The graph shows a function since it passes the vertical line test.
Answer:
(-9,12)
Step-by-step explanation:

Answer:
d is answer i 100% sure for first
Answer:
-n+1
Step-by-step explanation:
h(n)-g(n) =n+2-2n-1 ,collect like terms
n-2n+2-1 = -n+1