Section: Mathematics

23) If 2x + y = 10 and x = 3, what is x - y

1. -3
2. -1
3. 0
4. 1
5. 3

Since x = 3, 2x + y = 6 so 6 + y = 10 resulting in y = 4. Therefore x - y = 3 - 4 = (-1).