Tentukan f(3) jika f(x) = 4×-2 A. f(-1) D. f(-5)

F(x): 4x-2
f(3) : (4*3)-2
: 12 – 2
: 10

f(-1):(4*-1)-2
: -4-2
:-6

f (-5) :(4*-5)-2
:-20-2
:-22