6) Twenty-one subtracted from a number is -8. Find the number.

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Find the balance at the end of 4 years if 1000 is deposited at the rate of

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?