PLEASE HELP ME WITH THIS QUESTION AND SHOW YOUR WORK

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

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?

Find the area of the region that is inside r=3cos(theta) and outside r=2-cos(theta). sketch the curves.