Will give , 5star, and brainliest answer.

y varies directly with x, and y = 9 when x = 2. what is the value of y when x = 3?

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Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

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

Melody received $140 at the end of a certain week. how many customers did she advise that week?