Expression 3: "y" equals left parenthesis, left parenthesis, 0.2 5 "x" , right parenthesis cubed minus 4 left parenthesis, 0.2 5 "x" , right parenthesis plus 5 , right parenthesisy=0.25x3−40.25x+5
3
Expression 4: "y" equals 2 left parenthesis, "x" cubed minus 4 "x" plus 5 , right parenthesisy=2x3−4x+5
4
Expression 5: "y" equals 0.2 5 left parenthesis, "x" cubed minus 4 "x" plus 5 , right parenthesisy=0.25x3−4x+5