Question

Your friend needs to gain weight to wrestle in a heavier weight class. His goal is to gain 2 pounds per week. After 3 weeks, his weight is up to 158 pounds. If the rate of weight gain stays the same, which equation shows his weight at the end of each week?

Answer 1

If the rate of increase is 2 pounds/week, then the weight gained after 3 weeks would be 6 pounds therefore his initial weight would be 152 pounds. So the linear equation would be 152+2w, w being the amount of weeks

Answer 2

The equation would be y−158=2(x−3)