Answer:
x / 2 = 17
Explanation:
Since we're told that there are 2 friends, they split the cost evenly, and they each paid $17 individually, we'd have to use the equation x / 2 = 17 to find the total cost.
If you were to solve, you'd find that the total cost was $34 as 2 * 17 = 34 and 34 / 2 = 17