Ineed with explaining why i got this wrong and i don't understand these problems so i also need the solutions much appreciated !

Given: x + y = 6. if xe (-15, -6, -1), then which of the following sets of ordered pairs are solutions? © {(-15, -21), (-6, -12), (-1, -7)} [(-15, 21), (-6, , 7)} {(-15, 21), (-6, 12), (-1, -7)}

Solve the equation -9p - 17 =10 a -3 b. 16 c. 18 d -16

You are shooting hoops after school and make 152 out of a total of 200. what percent of shots did you make? what percent did you miss? show proportion(s).