final 100 point giveaway although quick favor if i give you 100 points can i get five brainliest also make sure you giveaway 100 points on here two thank you

What is the standard form of -5x^2+2x^4-11+x^3+3x

If y varies directly as x2 and y=6 when x=6, find the constant of variation.

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