If the question is how many shelves are needed, then the answer is 18 shelves.
So here. I don't know how to explain so-
The answer is b.6 because if you go through and look at each available type of sandwich to make you will get six different selections
Answer:
exactly what it says
Step-by-step explanation:
you see the numbers on f and g??
(F x G)x(-1)
