Renee is a sales associate at a store. she earns $80 a week plus a 15% commission on her sales. last week, she sold $200 with of items. what is the total amount renee earned for the week? how much did she earn from commission?

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.