Read all of the instructions. I will mark brainliest if you get this answer right, directions: don’t give me a explanation answer the question as simple as you can. And the first person to get it right will get brainliest, what is 100x100 if you answer this question and follow directions you will get brainliest. After you answer add next to it in quotes “I have the answer.”

The parabola opens: y=√x-4 (principal square root) up down right left

Asap! i'm not good math and i'm lost.

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