An industrial machine heats up to\[{{161}^{o}}F\] when it's being used – McqOptions

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1.	An industrial machine heats up to\[{{161}^{o}}F\] when it's being used. After being unused for an hour the temperature drops to\[{{144}^{o}}F\]. How much did the machine cool off?
A.	\[{{17}^{o}}F\]
B.	\[{{16}^{o}}F\]
C.	\[{{18}^{o}}F\]
D.	\[{{19}^{o}}F\]
Answer» B. \[{{16}^{o}}F\]

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