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1. You can multiply both sides by r^2 + 2 because this quantity is always positive. Hence the inequality sign does not change. Then replacing p for r and simplifying, we get: Is p + 2/p >p? For p=1 yes For p=-1 no
2. Rearranging we get: Is (r^2 + 2)/p > r? We dont know anythinga bout p so Insufficient
the equation becomes: Is (r^2 + 2)/r > r? Since r>0, multiply both sides by r and the sign does not change. You get r^2 +2 > r^2