I need help on this question quick plz show work

Solve the system of equations. y= 2x y= x^2 - 15

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

What is the value of p in the equation y^ = -4x?