A heated piece of metal cools according to the function c(x) = (.5)x − 10, where x is measured in hours. A device is added that aids in cooling according to the function h(x) = −x − 1. What will be the temperature of the metal after five hours?
−6° Celsius
26° Celsius
32° Celsius
38° Celsius
−6° Celsius
26° Celsius
32° Celsius
38° Celsius