4*100+7*10+6*1+6*(1/10)+3*(1/100)+7 *(1/100) standard form

Which of the following expressions is equal to 2x^2+8

How many $20 bills do you need to have to make $280

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