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Harlamova29_29 [7]
3 years ago
15

Which is the solution set for –7 ≤ 4x + 1 ≤ 5? I added a picture !

Mathematics
2 answers:
Bess [88]3 years ago
8 0
-7\leq4x+1\leq5\\
-8\leq4x \leq4\\
-2\leq x\leq1 \Longleftrightarrow x\geq-2 \wedge x\leq1 \Rightarrow C

Oksi-84 [34.3K]3 years ago
6 0
-7\leq4x+1\leq5\ \ \ \ |subtract\ 1\\\\-7-1\leq4x+1-1\leq5-1\\\\-8\leq4x\leq4\ \ \ \ |divide\ by\ 4\\\\-8:4\leq4x:4\leq4:4\\\\\boxed{-2\leq x \leq1\Rightarrow x\in[-2;\ 1]}

\boxed{x\geq-2\ and\ x\leq1}\to\answer{\boxed{C}}
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