Antonio works 40 hours per week at Electronics Warehouse. He earns $6.50 per
hour plus a 3% commission on the total dollar
value of the service contracts he sells. If
Antonio's hourly rate were increased by $0.15
and his commission were raised to 5%, how
much would he earn if he sold $4000 worth of
service contracts for the week?

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.