The 2 in the number 14.23 is in which place value

Answer this question only if you know the 30 points and

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?

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?