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Mathematics
Problem
Find the solution set of
5
≤
3
x
+
2
≤
20
5 \le 3x + 2 \le 20
5
≤
3
x
+
2
≤
20
. a)
(
1
,
6
)
(1,6)
(
1
,
6
)
b)
[
3
,
6
]
[3,6]
[
3
,
6
]
c)
[
1
,
6
]
[1,6]
[
1
,
6
]
d)
[
1
,
18
]
[1,18]
[
1
,
18
]
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