Find g (x) - f (x) g (x) = x2 + 1 and f (x) = 2x + 5 A. x2 - 2x - 4 B. -x2 + 2x + 4 C. x2 - 2x + 4 D. x2 + 2x + 6

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