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Solve the Problem ∣C\mid \mathrm { C } +80∣≤57+ 80 \mid \leq 57

Question 286

Multiple Choice

Solve the problem.
-The temperatures in a freeze-dry process in degrees Celsius roughly satisfy the inequality ∣C\mid \mathrm { C } +80∣≤57+ 80 \mid \leq 57 . What range of temperatures corresponds to this inequality?


A) [−23∘C,23∘C]\left[ - 23 ^ { \circ } \mathrm { C } , 23 ^ { \circ } \mathrm { C } \right]
B) [−137∘C,−23∘C]\left[ - 137 ^ { \circ } \mathrm { C } , - 23 ^ { \circ } \mathrm { C } \right]
C) [−137∘C,137∘C]\left[ - 137 ^ { \circ } \mathrm { C } , 137 ^ { \circ } \mathrm { C } \right]
D) [−23∘C,137∘C]\left[ - 23 ^ { \circ } \mathrm { C } , 137 ^ { \circ } \mathrm { C } \right]

Correct Answer:

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