Helen used of her savings for her first year of college. of that money was spent on her housing and meals. Which equation shows the fraction of her total savings that was spent on her housing and meals?​

Explain the answer and how to do it

What is the base of 1/9 to the power of 2

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