What type of numbers has exactly two factors?

What is the quadric regression equation that fits these data

For how answer my question this will be the last question can you answer in math subject

Which question is not a good survey question? a.don't you agree that the financial crisis is essentially over? 63on average, how many hours do you sleep per day? c. what is your opinion of educational funding this year? d.are you happy with the availability of electronic products in your state?