For question 4 pls me , show work step by step

One integer is 8 times another. if the product is 72, then find the integers

Ling listed all of the factors of a mystery number: 1,2,4,8,16,32 what is the mystery number?

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.