Hi Emily,
Please look into question formatting before posting questions on the forum.
As for the question, IMO the answer should be B.
St 1: Lets take a value like +/- 3.5. Both these cases yield inconsistent answers to the given question. Insufficient.
St 2: k+k^3 can only be negative (<0) when k itself is negative. Given that, it can be concluded that k+k^2+k^3 will also always be nagative. Sufficient.
Don't forget to hit the kudos button!
Please look into question formatting before posting questions on the forum.
As for the question, IMO the answer should be B.
St 1: Lets take a value like +/- 3.5. Both these cases yield inconsistent answers to the given question. Insufficient.
St 2: k+k^3 can only be negative (<0) when k itself is negative. Given that, it can be concluded that k+k^2+k^3 will also always be nagative. Sufficient.
Don't forget to hit the kudos button!
