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Answer:
[4,0,6,12]
Step-by-step explanation:
When x = -1, f(x) =
2
x
−
2
=
2
(
−
1
)
−
2
= -4.
When x =1, f(x) =
2
x
−
2
=
2
(
1
)
−
2
= 0.
When x =4, f(x) =
2
x
−
2
=
2
(
4
)
−
2
= 6.
When x =7, f(x) =
2
x
−
2
=
2
(
7
)
−
2
= 12.
So the values achieved, which is the range is
{
−
4
,
0
,
6