What is the simplified form of the following expression q^3 h^-15/q^-6 h^9
a q^9/h^6
b q^9 h^6
c q^-9 h^-24
d q^9/q^24

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.