If f(x)=x^2 and g(x) = x + 2, find f[g(x)]?

Question

a. x^2 +2

b. x^2 +4x + 4

c. x^2 +x +2

d. X^2 -x+2

and

if f(x)=x^3 +4 and g(x) =x+3, find [g*f](2)

a. 15

b. 12

c. 5

d. 29

Answer 1

f[g(x)]=g(x)^2

=(x+2)^2

=x^2+4x+4

B

For the second one: First find f(2)

f(2)=2^3+4=8+4=12

Now find g (f(2)), or g(12)

g(12)=12+3=15

A

_/

Answer 2

I can't find anything.  ask in the math category instead of here in words and wordplay or ask in homework help, that would be better still.

Answer 3

The first one is B

The second is confusing with the choices. It would seem to me that the answer should be bigger than all of those choices