Someone please solve this & help me understand it Thankyou so much

Fredrick designed an experiment in which he spun a spinner 20 times and recorded the results of each spin

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?

State one method by which you can recognize a perfect square trinomial.