Which two ratios represent quantities that are proportional? O A. 40 and 52 18 24 O B. 22 10 and a 32 20 C. 36 and 60 15 25 O D. and 14​

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

Can you me find the missing length. i attached an image.

Percent increase and decrease. original number: 45 new number: 18