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Functions
medium
0:00.0
If
f
(
x
)
=
2
x
+
5
f(x) = 2x+5
f
(
x
)
=
2
x
+
5
, what is
f
−
1
(
−
1
)
f^{-1}(-1)
f
−
1
(
−
1
)
?
A
-3
B
3
C
1.5
D
-1.5
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