Which statement best describes how to determine whether f of x is equal to x cubed plus 5 x plus 1 is an even function?
A
Determine whether negative x cubed plus 5 times negative x plus 1 is equivalent to x cubed plus 5 x plus 1 .B
Determine whether negative open paren x cubed plus 5 x plus 1 close paren is equivalent to x cubed plus 5 x plus 1 .C
Determine whether negative x cubed plus 5 x plus 1 is equivalent to negative open paren x cubed plus 5 x plus 1 close paren .D
Determine whether negative x cubed plus 5 times negative x plus 1 is equivalent to negative open paren x cubed plus 5 x plus 1 close paren .