Robyn wishes to invest $660 so that the income from an investment paying interest at 10% per annum is equal to the interest from a bond paying 12% per annum. How
much should Robyn invest at each rate?

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