Tell me the wrongest answer to this question.

5+5

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?

Sketch one cycle if the cosine function y=2cos2theta

On a piece of paper graft y+2> -3x-3 then determine which answer matches the graph you drew