Question 3 mia is three years older than twice her sister brooke’s age. the sum of their ages is less than 30. what is the greatest age brooke could be? 10 7 9 8 question 4 the length of a rectangle is four times its width. if the perimeter is at most 130 centimeters, what is the greatest possible value for the width? 26 cm 21.7 cm 13 cm 52 cm

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