Apair of shoes that now sells for $63 has been marked up 40%. find the mark up on the pair of shoes.

What is the value of x in the following equation. -x ^3/2 = -27

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

Whit h equation best represents this situation the number 98 increased by an unknown number equal to 120