4. the equation for line m is . use this information and these descriptions to write an equation for line n, line p, and line r. (a) line m and line n have no solutions. write an equation that can represent line n. (b) line m and line p have infinitely many solutions. write an equation that can represent line p.

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.