Classify each function into one of the three categories: exponential, linear, or neither. ()=−2(8)
f
(
x
)
=
−
2
(
8
)
x
()=−2(8)
f
(
x
)
=
−
2
(
8
)
x

()=15−
f
(
x
)
=
15
−
x
()=15−
f
(
x
)
=
15
−
x

()=12(3)
f
(
x
)
=
1
2
(
3
)
x
()=12(3)
f
(
x
)
=
1
2
(
3
)
x

()=62+9
f
(
x
)
=
6
x
2
+
9
()=62+9
f
(
x
)
=
6
x
2
+
9

()=4(1.6)10
f
(
x
)
=
4
(
1.6
)
x
10
()=4(1.6)10
f
(
x
)
=
4
(
1.6
)
x
10

()=(18−)
f
(
x
)
=
x
(
18
−
x
)
()=(18−)
f
(
x
)
=
x
(
18
−
x
)

()=16‾‾‾√4+2
f
(
x
)
=
16
4
+
2
x
()=16‾‾‾√4+2
f
(
x
)
=
16
4
+
2
x