What is 1,050 decreased by 20% ??

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?

Determine domain and range, largest open interval, and intervals which function is continuous.

Present age of man is 45 years, 5 years back his age was 4 times age of his son what is present age of his son?