One thousand four hundred divided by seven

Write an equation for the function that includes the points (1,4/5) and (2,2/3)

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

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.