Answer:
y = $2.5x, where "x" is the number of drinks.
Step-by-step explanation:
Step 1: Let "x" be the number of drinks and "y" be the cost.
Step 2: The cost of a drink = $2.5
Now we can find the cost for "x" drinks.
y = $2.5x.
Hope you will understand.
Thank you :)