There are currently 3 students signed up for a trip. the van can transport only 7 students. which graph shows all the possible values for the extra number of students that need to sign up so that more than one van is needed to transport them? number line with closed circle on 4 and shading to the right. number line with closed circle on 4 and shading to the left. number line with open circle on 4 and shading to the right. number line with open circle on 4 and shading to the left.

Lisa has three classes that each last 50 minutes. what is the total number of minutes of the three classes

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

Tom is the deli manager at a grocery store. he needs to schedule employee to staff the deli department for no more that 260 person-hours per week. tom has one part-time employee who works 20 person-hours per week. each full-time employee works 40 person-hours per week. write and inequality to determine n, the number of full-time employees tom may schedule, so that his employees work on more than 260 person-hours per week. graph the solution set to this inequality.