Expression 3: "y" Subscript, 1 , Baseline tilde "b" "x" cubed plus "c" "x" squared plus "d" "x" Subscript, 1 , Baseline plus "g"y1~bx31+cx21+dx1+g
3
Expression 4: "y" Subscript, 1 , Baseline tilde "a" "x" to the 4th power plus "b" "x" cubed plus "c" "x" squared plus "d" "x" Subscript, 1 , Baseline plus "g"y1~ax41+bx31+cx21+dx1+g