Question

If f(x) = 2x + 2 and g(x) = x², then the value of fog (4) is:
(a) 18 (b) 22
(c) 34 (d) 128​

Answer 1

Answer:

34

Step-by-step explanation:

Fog=F(g(x))

Fog=F(g(4))

Fog=F(16)

Fog=2(16)+2

Fog=34

Answer 2

Step-by-step explanation:

f(x)=2x+2 and g(x)=x²

fog(x) = f{g(x)}

=f(x²)

=2x²+2

then

fog(4)= 2(4)²+2

=2(16)+2

=32+2

=34