Answer:
Option A is correct.
w represents a number of water bottles
Step-by-step explanation:
Let w represents the number of bottles.
As per the given statement:
A twelve-pack of 20-ounce water bottles sells for $4.78
⇒[tex]20w = 4.78[/tex]
The expression 20w represents the amount of water in a number of bottles.
Therefore, the variable w represents a number of water bottles.