Alan is putting weed killer on a field to get it ready for planting. the directions on the can say to use 4/5 of a quart for each acre of land. how much weed killer will alan need for two fields one that is 22 1/2 acres and one is that 38 1/4 acres?

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.