8x+2> 10 equals what is the answer?

If ac = 12 and ab=7 is it possible that bc =10

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?

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle