PLEASE SOMEONE HELP ME WITH THIS QUESTION ANYONE In Edward's Excellent Store, everything is 25% off. You buy a jacket that is originally for $36. When you go to the cashier, you pay 6% sales tax. How much do you pay in all?

A.$62.82
B.$28.62
C.$38.96
D.$76.83

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

Mario has $14.35 left in his wallet. he spent $148.43 for tablecloths. then, he spent $92.05 for napkins. how much money did mario have in his wallet to start with?

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).