1. Martha can complete 15 activities a day at summer camp. She can choose between crafts or sports Part A: Define two variables and create an equation to represent the situation
Part B:what are three possible combinations of crafts and sports that Martha can do?
So I can do part a and b but I am having trouble on the graphing part, it only goes to 7 but that is not enough??? HELP!?

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