Expression 3: "y" Subscript, 1 , Baseline tilde "a" "x" cubed plus "b" "x" squared plus "c" "x" Subscript, 1 , Baseline plus "d"y1~ax31+bx21+cx1+d
3
Expression 4: "y" Subscript, 1 , Baseline tilde "a" "b" Superscript, "x" Subscript, 1 , Baseline , Baseliney1~abx1
4
Expression 5: "y" equals 1.8 1 1 6 Superscript, left parenthesis, "x" minus 362.5 6 , right parenthesis , Baseline left brace, 0 less than or equal to "x" less than or equal to 500 , right bracey=1.8116x−362.560≤x≤500