Find the value of f(–3) and g(3) if f(x) = –6x + 3 and g(x) = 3x + 21x–3.

f(–3) = 21
g(3) = 9.78

f(–3) = –18
g(3) = –9.78

f(–3) = –3
g(3) = 30.04

f(–3) = 15
g(3) = 8.22