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OpenStudy (brooke1556):
A heated piece of metal cools according to the function c(x) = (.5)x − 7, where x is measured in hours. A device is added that aids in cooling according to the function h(x) = −x − 2. What will be the temperature of the metal after two hours? −4° Celsius 28° Celsius 32° Celsius 38° Celsius
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