Expression 5: "h" left parenthesis, "x" , right parenthesis equals left brace, "x" less than 75 : 400 minus 2 "x" , "x" less than 200 : 550 minus 4 "x" , right bracehx=x<75:400−2x,x<200:550−4x
5
Expression 6: "i" left parenthesis, "x" , right parenthesis equals left brace, "x" less than 75 : 400 minus "x" , "x" less than 200 : 625 minus 4 "x" , right braceix=x<75:400−x,x<200:625−4x
6
Expression 7: "j" left parenthesis, "x" , right parenthesis equals left brace, "x" less than 75 : 400 , "x" less than 200 : 700 minus 4 "x" , right bracejx=x<75:400,x<200:700−4x