Alvin weighed 180 pounds at the beginning of the semester. After eating healthy foods and exercising regularly for six weeks, he lost 2 pounds per week. Which expression would he use to represent his current weight at any time after x amount of weeks if he continues to lose 2 pounds per week?

His current weight after x amount of weeks can be represented by the expression:

180 - 2x

The expression to represent Alvin's current weight after x amount of weeks, if he continues to lose 2 pounds per week, is:

180 - (2 * x)