Enter a numerical expression that represents the sum of u squared and 9, multiplied by eleven

Ill mark the brainliest if you me with the these three questions 7,8,9

The border line of the linear inequality 4x + 7y < 5 is dotted true or false?

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.