Plzz

multiply and simplify if possible

square root of 7x ( square root of x - 7 square root of 7)

What is the range? can’t seem to find it out

Which letters from the table represent like terms? a and b b and c a and d b and d

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