A phone is charged with a wire and hung by the cord. Explain why the phone did not drop from the cord immediately and explain in terms of force why the phone dropped from the cord after some time. Sorry! this is meant to be in Science.

What is the total surface area of this square pyramid?

Which graph represents the function g(x) = |x + 4| + 2?

Suppose that 3% of all athletes are using the endurance-enhancing hormone epo (you should be able to simply compute the percentage of all athletes that are not using epo). for our purposes, a “positive” test result is one that indicates presence of epo in an athlete’s bloodstream. the probability of a positive result, given the presence of epo is .99. the probability of a negative result, when epo is not present, is .90. what is the probability that a randomly selected athlete tests positive for epo? 0.0297