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The temperature in a laboratory must be between 68 and 74 Fahrenheit, inclusive. If t is the temperature in the laboratory, which of the following inequalities represents this situation?

Respuesta :

The midpoint between 68 and 74 degrees is 71. T is unknown, so unknown minus midpoint is 71-t, but it has to be positive so it's written as | 71-t |. 74-71 = 3 and 71-68= 3, which means the temps CAN NOT fluctuate more than 3 degrees. Using that information, I believe that the correct answer is:
B) | 71-t | [tex] \leq [/tex] 3

Answer:

B) | 71-t |  \leq  3

Step-by-step explanation:

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