Help please :( points and brainlest !

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

Bring the fraction a/a-4 to a denominator of 16-a^2

Parallelogram efgh is a rectangle. he = 6, and fe = 8. find ge: and find fj: