Expression 4: "S" Subscript, 3 , Baseline left parenthesis, "x" , right parenthesis equals left brace, 0 less than "x" less than or equal to 2000 : 700 , 2000 less than "x" less than or equal to 6000 : 1100 , right braceS3x=0<x≤2000:700,2000<x≤6000:1100
4
Expression 5: "y" equals "S" Subscript, 1 , Baseline left parenthesis, "x" , right parenthesisy=S1x
5
"x"x
"S" Subscript, 1 , Baseline left parenthesis, "x" , right parenthesisS1x
"S" Subscript, 2 , Baseline left parenthesis, "x" , right parenthesisS2x
"S" Subscript, 3 , Baseline left parenthesis, "x" , right parenthesisS3x