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21 April, 00:34

A heated piece of metal cools according to the function c (x) = (.5) ^x - 11, where x is measured in hours. A device is added that aids in cooling according to the function h (x) = - x - 3. What will be the temperature of the metal after five hours?

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  1. 21 April, 02:15
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    Put x = 5 in each of the two functions and add the results to get the combined cooling effect.
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