Expression 3: "g" left parenthesis, "x" , right parenthesis equals 2 "m" left parenthesis, "x" , right parenthesis plus 1gx=2mx+1
3
Expression 4: "p" left parenthesis, "x" , right parenthesis equals 1 half "g" left parenthesis, negative "x" plus 4 , right parenthesis minus 1 halfpx=12g−x+4−12