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Mathematics
Problem
Solve the compound inequality
3
≤
2
(
5
−
x
)
<
1
+
x
3 \le 2(5 - x) < 1 + x
3
≤
2
(
5
−
x
)
<
1
+
x
. a)
(
3
,
7
2
]
(3,\,\dfrac{7}{2}]
(
3
,
2
7
]
b)
(
7
2
,
∞
)
(\dfrac{7}{2},\,\infty)
(
2
7
,
∞
)
c)
(
3
,
7
2
)
(3,\,\dfrac{7}{2})
(
3
,
2
7
)
d)
(
−
∞
,
3
]
(-\infty,\,3]
(
−
∞
,
3
]
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