Martha is hiring painters. Paint Plus charges a fee of $45 plus $19 an hour. Remodel ‘R Us charges a fee of $24 plus $22 an hour. After how many hours of work will the two companies cost the same?

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