A student takes a 50-question test. Each question is worth 2 points. That means the whole test is worth 100 points, and the student loses 2 points for every question missed.

Write an expression to find the student’s test score if they get x questions wrong
1. 50 - 2x
2. 2x - 100
3. 2x - 50
4. 100 - 2x