Let
f
(
x
)
=
3
x
+
3
f
(
x
)
=
3
x
+
3
and
g
(
x
)
=
x
2
+
x
+
2
g
(
x
)
=
x
2
+
x
+
2
. Evaluate the following.

a
.
a
.

f
(
2
)
f
(
2
)
=
b
.
b
.

f
(

3
)
f
(
-
3
)
=
c
.
c
.

g
(

2
)
g
(
-
2
)
=
d
.
d
.

g
(
3
)
g
(
3
)
=
e
.
e
.

f
(
a

3
)
f
(
a
-
3
)
=
f
.
f
.

g
(
a

3
)
g
(
a
-
3
)
=