What is the solution to this equation x+7=23

Which expression shows the sum of the polynomials with like terms grouped together

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

If your teacher tells you to do questions 6 through 19 in your math book for homework, how many questions is that