Please help =/ And my heard hurt...

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)

Kira looked through online census information to determine the overage number of people living in the homes in her city what is true about kira's data collection?

As voters exit the polls, you ask a representative random sample of voters if they voted for a proposition. if the true percentage of voters who vote for the proposition is 63%, what is the probability that, in your sample, exactly 5 do not voted for the proposition before 2 voted for the proposition? the probability is