The inequality represents this situation will be |t – 68| ≤ 4. Then the correct option is B.
What is Algebra?
The analysis of mathematical representations is algebra, and the handling of those symbols is logic.
The target temperature for a laboratory is 68° Fahrenheit.
It can vary by up to 4º.
If t is the temperature in the laboratory.
Then the inequality will be
68 + 4 ≤ t ≤ 68 – 4
Subtract 68, then we have
4 ≤ t – 68 ≤ – 4
|t – 68| ≤ 4
Then the correct option is B.
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