Given ƒ(x) = 3x + 9, find x when ƒ(x) = 21.

A) 3
B) 4
C) 7
D) 10

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Order the measurements from the least to the greatest. 2,720 ml , 24.91 l , 0.0268 kl

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