Yeah im just gonna send a picture

Asystem of equations has 1 solution. if 4x-y=5 is one of the equations , which could be the other equation ?

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 sum of these consecutive integers is equal to 9 less than 4 times the least of the integer. find the three integers