Expand and simplify (4x+3)(2x-5)

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

The zoo collects $9.60 for every 24 tickets sold. how much will be collected for 400 tickets?

Given that s is the centroid of triangle mno, find sq.