Mark weighed 120 pounds last year. he now weighs 117 pounds. what is the percent change in his weight?and explain how you solve and got the problem : )
( 11 points for this question )

Harry’s soccer team plays 2 nonconference games for every 3 games that they play against conference opponents. if y represents the number of nonconference games and x represents the number of conference games, which equation best models this proportional relationship? a)y=2/3 x b)y=3/2 x c)y = 2x d)y = 6x

Quick translate "x is 12 units from 20" into an equation. what are the values of x being described? if you can answer any of my other questions that'd be great too

Use set buikder notation to represent the following set: {, -2, -1, 0}