An equation that states two ratios are equivalent

Explain how you do each step what term makes it inconsistent y=2x - 4 ?

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

Awindow washer cleans 42 windows in 2 hours. at this rate, how many windows did he clean in 180 minutes.