Is f (x) = - 3x4 - 2x - 5 an odd or even function?

If you replace every x with - x and evaluate

if the resulting function is

1. the same as te original, it is even function

2. negative of the original, it s odd

f (-x) = - 3 (-x) ^4-2 (-x) - 5

f (-x) = - 3x^4+2x-5

compared to original

-3x^4-2x-5

it is nither the same or the exact negative

answer is neither