Plz help plz plz plz​

F(x)=x/2-2 and g(x)=2x^2+x-3 find (f+g)(x)

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

Prove that (x-2)is factor of p (x)=2x³-3x²-17x+30