So yeah im taking a Algebra 1 test on edgunity if anyone could help

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 5x^2 + 10x

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