Let $q(x) = 2 - x^2$. Evaluate and simplify the following:

(a) $q( 4 ) =$

(b) $q(r) =$ help (formulas)

(c) $q( r - 4 ) =$ help (formulas)

(d) $q(r) - 4 =$ help (formulas)

(e) $q(r) - q( 4 ) =$ help (formulas)