Rachelle buys a $22.50 book at the local bookstore. At the checkout counter she uses her membership card to receive a 6% discount on the price before the 8% tax rate is added to the final price. How much did Rachelle pay for the book?

Segment xz is bisected by point y. if xy = 12x, and the measure of xz = 18x – 6, solve for x

What are the steps to solving the inequality 3b + 8 ≥ 14?

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