Mia is three years older than twice her sister Brooke's age. The sum of their ages is less than 30. What is the greatest age Brooke could be?

a.) 7
b.) 8
c.) 9
d.) 10

Just tell me how to set up the equation.

Plz hurry evaluate the expression a+b where a=8 and b=19

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