Franco borrows $400 and will pay 4% simple interest. write an equation to answer each question. a. what will be the amount of interest if franco pays back the loan in 1 year? b. what will be the amount of interest if he pays back the loan in 2 years? c. if franco pays off the loan in 2 years, what is the total amount he will pay the lender?

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.