Abackhoe can dig 5 10 of a ton of dirt in 1 6 of a hour. compute the unit rate by setting up a complex fraction and simplifying. a) 1 tons per hour b) 3 tons per hour c) 6 tons per hour d) 9 tons per hour

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.