Determine whether each function is even, odd, or neither. (a) (x) = x 2 - 7 (b)

Determine whether each function is even, odd, or neither.

(a) ƒ(x) = x² - 7

(b) ƒ(x) = x³ - x - 1

(c) ƒ(x) = x¹⁰¹ - x⁹⁹