Please help! Brainliest Answer! Thank You!

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.

If p(a) = 0.70 and p(b) = 0.20, then a and b are independent events if

Where does curve intersect log(6x+10)=log 1/2 x