Ms. Mitchell is repainting the shed that is out in her backyard. She is going to paint all outside surfaces, including the door and roof. She is not painting the very bottom of the shed, the part that is touching the grass. How many square feet does she have to paint?

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.