mark recorded the diameter of the same tree trunk for 10 years. he modeled the data with the equation shown, where d is the diameter, in inches, of the tree trunk after y years. d=.47y+0.25

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.