Jairo spent $40.18 on 3 music cds each cd cost the same amount . the sales tax was $ 2.33. jairo also used a coupon for 1.00 of his purchase . what would each cd cost

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.