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Aheated 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?

This is so hard and it’s for a test

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base