Nate starts a lawn-mowing business. In his business, he has expenses and revenue. Nate's
expenses are the cost of the lawn mower and
gas, and his revenue is $25 per lawn. At what
point will Nate's revenue exceed his expenses?

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.