He has to add half of a foot to get 2 and a half feet for the banner
Answer:
The answer is 0.
Step-by-step explanation:
Simply plug in -7 for x as they want to see what the value of the function is when x=-7.
You can then just add -7 and 7.
7 + -7 = 0
So the answer is 0
∠3 and ∠4 are angles that must be supplementary.