An exam worth 145 points contains 50 questions. some of the questions are worth two points and some are worth five points. how many two point questions are on the test? how many five point questions are on the test?

It says factor each expression 49x-28?

For the following geometric sequence, find the recursive formula. {-80, 20, -5, } i need : ')

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