. The graph is proportional and has an equation of y = -x + 18. B. The graph is non-proportional and has an equation of y = -x + 18. C. The graph is non-proportional and has an equation of y = -2x + 18. D. None of the above statements are true.

Which of the following is the correct equation for this function? a. y= (x+4)(x+2) b. y=x^2+ 3x – 2 c. y+ 2 = – 2(x+3)^2 d. y+ 2 = 2(x+3)^2

I'm confused on this could anyone me and show me what i need to do to solve it.

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