Leslie’s bookstore has a 48% off sale on all of its merchandise. how much is the discount on a book that originally costs $36.45?

Find the sum of 4x^{2} -4+6 and -7^{2} +3x+1

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

Solve each quadratic equation by factoring and using the zero product property. [tex]x^2+6x+8=0[/tex]