Step-by-step explanation:
5 gallons 3 quarts +4 gallons 2 quarts
5.3
+
4.2
=9.5 gallons
1, 24; 2, 12; 3, 8; 4, 6. mix and match for the codes but that's like 100+ combinations and I don't have that kind of time sorry
The answer is B, 7.
We can factor a 2 out of this:


We can't factor anything.

We can factor a 4 out of this:


We can factor an 8 out of this:

So your answer is B, 7.
D I think so, I might be wrong tho