Two of the greatest greek mathematics were archimedes (287-212 b. c) and pythagoras (569-500 bc).
a. express the year of archimedes'birth as a negative number
b. express the year of pythagoras' birth as a negative number.
c. how many years apart were they born? my answers was as followed and it was wrong a.-75 b.-69 c.6

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