Alvin weighed 200 pounds at the beginning of the semester. After eating healthy foods and exercising regularly for ten weeks, he lost 3 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 3 pounds per week?
200+3x
200x-3
200-3x
200x+3
200-3x
To find the expression that represents Alvin's current weight after x amount of weeks, we need to consider that he is losing 3 pounds per week.
Since Alvin started at 200 pounds, after 1 week he would weigh 200 - 3 = 197 pounds. After 2 weeks, his weight would be 197 - 3 = 194 pounds.
We can see that for every week that passes, Alvin's weight decreases by 3 pounds. So, if x represents the number of weeks that have passed, the expression to calculate his weight at any time would be:
200 - 3x
Therefore, the correct expression to represent his current weight after x amount of weeks, if he continues to lose 3 pounds per week, is 200 - 3x.
The expression Alvin would use to represent his current weight at any time after x amount of weeks if he continues to lose 3 pounds per week is:
200 - 3x.