Four candidates are running for the office of Student Council President. Sabina wants to create graphs to show how many votes each homeroom cast for each of the candidates. Should she use a dot plot or a bar graph? Explain. *I keep getting taken down :(. Please answer fast!* :)

An office supply company conducted a survey before marketing a new paper shredder designed for home use. in the survey, 80 % of the people who tried the shredder were satisfied with it. because of this high satisfaction rate, the company decided to market the new shredder. assume that 80 % of all people are satisfied with this shredder. during a certain month, 100 customers bought this shredder. find the probability that of these 100 customers, the number who are satisfied is 69 or fewer.