Sarah and her friends are going blueberry picking. Sarah picks b blueberries. Michael picks 3 more than half as many as Sarah, and David picks 5 more than Michael. In addition, Kaycee picks 10 less than 3 times as many as David, and Hannah picks twice as many as Kaycee. Find an expression in terms of b for the number of blueberries that Hannah picked.

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