Suppose a pyramid’s dimensions are tripled. what is the ratio of this new, larger pyramid’s volume to that of the original pyramid? the new volume is one third the original volume. the new volume is triple the original volume. the new volume is 9 times the original volume. the new volume is 27 times the original volume.

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.