At what time, t, does the particle change directions?

If a baby uses 15 diapers in 2 days, how many diapers will the baby use in a year?

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

What is the approximate value of  x  in the equation below.–3.396–0.7080.3040.955