The price of a home is 160,000. the bank requires a 15% down payment. they buyer is offered two mortgage options. 15-year fixed at 8% or 30-year fixed at 8%. calculate the amount of interest paid for each option. how much does the buyer save in interest with the 15-year option?

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.