Join my zoom 938 446 6506 and the password is friends

Give the equations of two different lines that are perpendicular to the line 3x + 4y = 7.

Can someone tell me if this is perpendicular? !

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.