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s2008m [1.1K]
3 years ago
10

Four times a number increased by seven must be at least 31 but at most 55. Which interva

Mathematics
1 answer:
TEA [102]3 years ago
3 0

Answer:

6 \leq x \leq 8

Step-by-step explanation:

We'll represent the number with the expression 4x + 7

Then, we'll set up the inequality:

31 \leq 4x + 7 \leq 55

24 \leq 4x \leq 48

6 \leq x \leq 8

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