Yes he is correct because -18/3 would turn into -6 a whole number
(3×1/2) + (6×3/4) + (3×1) + 1 1/4 +1 1/2=11.75
It’s A. 10 feet is 10/3 yards and if you multiply that by 4 you get 40/3. Simplify the fraction and you get 13 1/3
Eighteen could be in standard form 18 or expanded form 10 + 8.
Answer:
There wouldn't be a slope. It would be 0/5
Step-by-step explanation:

6 - 6 = 0
2 + 3 = 5
0/5 isn't a slope.