College Algebra Quiz
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FOUNDATIONS & ALGEBRAIC SKILLS
Question 1
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A delivery hub is at mile marker
12
12
12
; drivers stay in-zone if
∣
x
−
12
∣
≤
5
|x-12|\le 5
∣
x
−
12∣
≤
5
. What mile markers qualify?
A
x
∈
[
7
,
17
]
x\in[7,17]
x
∈
[
7
,
17
]
B
x
∈
(
7
,
17
)
x\in(7,17)
x
∈
(
7
,
17
)
C
x
∈
(
−
∞
,
7
)
∪
(
17
,
∞
)
x\in(-\infty,7)\cup(17,\infty)
x
∈
(
−
∞
,
7
)
∪
(
17
,
∞
)
D
x
∈
(
−
∞
,
7
]
∪
[
17
,
∞
)
x\in(-\infty,7]\cup[17,\infty)
x
∈
(
−
∞
,
7
]
∪
[
17
,
∞
)
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