Charlton borrowed $9,000 from his bank. The loan will be compounded quarterly for 5.5 years at a 7.5% interest rate. Note: Use the formula: FV = P(1 + yu The full amount to the nearest whole cent) he will owe to the bank (principal + interest) is:

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.